"The Prodigal" is episode 15 of season 1 in the television show Angel. Written by Tim Minear and directed by Bruce Seth Green, it was originally broadcast on February 22, 2000 on the WB network. In this episode, Detective Kate Lockely learns her father has been spending his retirement as a mule for a syndicate of demon drug-runners. In response to investigative pressure from Angel, the demon drug lord orders Kate's father killed. Flashbacks show the human Angel struggling with his own father in 1753, incorporating scenes first shown in the Buffy the Vampire Slayer episode "Becoming (Part 1)", and remind viewers that Angel killed his family after being turned into a vampire by Darla. Plot In a flashback to Galway, Ireland, 1753, Angel - at that point, still human and known as "Liam" - is fighting with his father. Enraged by his son's chronic recklessness and current mocking demeanor, Liam's father slaps his son in the face, shouting that he'll always be a layabout and a scoundrel. In the present, Angel is fighting a demon that is dressed like a homeless person on the train tracks in an L.A. subway tunnel. As Detective Kate Lockley arrives on the scene, the demon clutches its chest, sinks to the ground and expires. Forced again to deal with L.A.'s dark side and Angel's place in it, Kate ironically wonders whether she should call the coroner or Hazardous Materials, while Angel tries to convince her not to report the supernatural aspects of this case. Later, as an officer interviews the Blue Circle courier who pulled the emergency cord after allegedly being attacked by "your average Joe-stink homeless guy," Angel's instincts are immediately aroused when he spots Kate's dad, retired police detective Trevor Lockley, take a package from the crime scene. At Angel Investigations, Angel identifies the demon in one of Wesley's reference books as a Kwaini demon, an inherently non-violent race. Angel visits Kate at the precinct, but as he explains that something must have set off the Kwaini demon in the subway, Kate interrupts, preferring that he say "evil thing" instead of "demon." He is unable to convince Kate that the demon she saw dead in the subway is not an evil evil thing. Kate is reluctant to admit that his news means that this case is not as routine as they initially believed. The AI team splits up to pursue their