<Ul> <Li> Melissa Hastings ( Torrey DeVitto ) ( seasons 1 -- 7 ) is Spencer 's older sister , who was engaged to Wren at the start of the series , but later returns to Ian . A perfectionist and the favored daughter , she was Spencer 's rival for most of their lives . Their competition led to Spencer kissing both Ian and Wren , which culminated in Melissa breaking off her engagement with Wren . After their breakup , Melissa rekindled her relationship with Ian and the two eloped ; after which Melissa confided in Spencer that she just wanted the fighting between them to stop . Shortly after marrying Ian , Melissa becomes pregnant , which again causes a rift between her and Spencer , who suspects Melissa is covering for Ian . When Ian goes missing , Melissa refuses to believe Spencer 's claims that he is dead , thinking that she is receiving text messages from Ian , who is in hiding . After the discovery of Ian 's body , Melissa becomes depressed and apologizes to Spencer for choosing Ian over her . When Melissa finds Ian 's phone in Spencer 's bag , ( although `` A '' put the phone in there ) , she believes it was Spencer sending the texts to her phone and vows she will never forgive Spencer for this . Melissa discovers that Jason is their half - brother and says that she ca n't be around their parents because they lied to her and Spencer . She still loiters around the house and Spencer and her friends begin to suspect that Melissa knows more about `` A '' and Ali 's disappearance than she is letting on . They find a video taken inside Alison 's room the night she disappeared , and Melissa is shown throwing open the door and yelling `` where is she ? ! '' The Liars also find out that Melissa was sending Ali threatening text messages , and had worked at a law firm that Ali had suspected of assisting `` A '' in messing with her life . Spencer and Melissa 's father 's gun goes missing , and Spencer fears Melissa took it . Even though Melissa did n't take the gun , her parents still feared that she killed Alison through jealousy , so her mother hired a private investigator to watch her . Toward the end of the second season , Melissa makes some odd statements that implies she knows some secrets about Alison and / or the N.A.T. club . Melissa lost her baby after Ian died . In the third - season finale it is revealed that Melissa is working with Jenna and Shana . In the fourth - season premiere it is revealed that she was the Queen of Hearts that drugged Aria on the Halloween train and put her in a box , along with Wilden . Spencer mentions to Melissa that Wilden was blackmailing her to do so , but Melissa never confirms this suspicion . In the fifth season , it is revealed that Melissa is Bethany Young 's killer . She saw Spencer carrying a shovel and then found Bethany 's body . She would n't look her in the face and assumed that it was Alison whom she thought Spencer had killed . She pushed Bethany into the ground and buried her , unaware that she was still alive , thereby killing her . After telling this to Spencer , Melissa flies back to England and it is revealed that she and Wren are seeing each other again . </Li> <Li> Peter Hastings ( Nolan North ) ( seasons 1 -- present ) is the biological father to Spencer , Melissa , and Jason DiLaurentis . A lawyer who places a great emphasis on winning , he destroys evidence that he fears will indicate Spencer 's involvement in Alison 's murder . Initially he disapproves of Spencer and Toby dating ; he warns Toby after he begins to work for him . Peter strongly dislikes the DiLaurentis family , who he claims are `` always crossing lines '' . In Season 2 , Episode 19 , it is revealed that Peter did have an affair with Jessica DiLaurentis , that he is Jason 's father and that Jason , Spencer and Melissa are all half - siblings . He paid a private investigator to look into Ali 's disappearance , as he was afraid that Melissa had something to do with it since he found out Melissa had been sending Ali threatening text messages . </Li> <Li> Veronica Hastings ( Lesley Fera ) ( seasons 1 -- present ) is Spencer 's and Melissa 's mother .
<Ul> <Li> Melissa Hastings ( Torrey DeVitto ) ( seasons 1 -- 7 ) is Spencer 's older sister , who was engaged to Wren at the start of the series , but later returns to Ian . A perfectionist and the favored daughter , she was Spencer 's rival for most of their lives . Their competition led to Spencer kissing both Ian and Wren , which culminated in Melissa breaking off her engagement with Wren . After their breakup , Melissa rekindled her relationship with Ian and the two eloped ; after which Melissa confided in Spencer that she just wanted the fighting between them to stop . Shortly after marrying Ian , Melissa becomes pregnant , which again causes a rift between her and Spencer , who suspects Melissa is covering for Ian . When Ian goes missing , Melissa refuses to believe Spencer 's claims that he is dead , thinking that she is receiving text messages from Ian , who is in hiding . After the discovery of Ian 's body , Melissa becomes depressed and apologizes to Spencer for choosing Ian over her . When Melissa finds Ian 's phone in Spencer 's bag , ( although `` A '' put the phone in there ) , she believes it was Spencer sending the texts to her phone and vows she will never forgive Spencer for this . Melissa discovers that Jason is their half - brother and says that she ca n't be around their parents because they lied to her and Spencer . She still loiters around the house and Spencer and her friends begin to suspect that Melissa knows more about `` A '' and Ali 's disappearance than she is letting on . They find a video taken inside Alison 's room the night she disappeared , and Melissa is shown throwing open the door and yelling `` where is she ? ! '' The Liars also find out that Melissa was sending Ali threatening text messages , and had worked at a law firm that Ali had suspected of assisting `` A '' in messing with her life . Spencer and Melissa 's father 's gun goes missing , and Spencer fears Melissa took it . Even though Melissa did n't take the gun , her parents still feared that she killed Alison through jealousy , so her mother hired a private investigator to watch her . Toward the end of the second season , Melissa makes some odd statements that implies she knows some secrets about Alison and / or the N.A.T. club . Melissa lost her baby after Ian died . In the third - season finale it is revealed that Melissa is working with Jenna and Shana . In the fourth - season premiere it is revealed that she was the Queen of Hearts that drugged Aria on the Halloween train and put her in a box , along with Wilden . Spencer mentions to Melissa that Wilden was blackmailing her to do so , but Melissa never confirms this suspicion . In the fifth season , it is revealed that Melissa is Bethany Young 's killer . She saw Spencer carrying a shovel and then found Bethany 's body . She would n't look her in the face and assumed that it was Alison whom she thought Spencer had killed . She pushed Bethany into the ground and buried her , unaware that she was still alive , thereby killing her . After telling this to Spencer , Melissa flies back to England and it is revealed that she and Wren are seeing each other again . </Li> <Li> Peter Hastings ( Nolan North ) ( seasons 1 -- present ) is the biological father to Spencer , Melissa , and Jason DiLaurentis . A lawyer who places a great emphasis on winning , he destroys evidence that he fears will indicate Spencer 's involvement in Alison 's murder . Initially he disapproves of Spencer and Toby dating ; he warns Toby after he begins to work for him . Peter strongly dislikes the DiLaurentis family , who he claims are `` always crossing lines '' . In Season 2 , Episode 19 , it is revealed that Peter did have an affair with Jessica DiLaurentis , that he is Jason 's father and that Jason , Spencer and Melissa are all half - siblings . He paid a private investigator to look into Ali 's disappearance , as he was afraid that Melissa had something to do with it since he found out Melissa had been sending Ali threatening text messages . </Li> <Li> Veronica Hastings ( Lesley Fera ) ( seasons 1 -- present ) is Spencer 's and Melissa 's mother .
who plays spencer 's dad on pretty little liars
who plays spencer 's dad on pretty little liars
Nolan North
Nolan North