Reaper attacks the wedding guests, including Rose's mother Jackie and an infant Rose. The Doctor runs to the church and directs everyone inside, noting that the age of the church will protect them against the Reapers. The Doctor explains to Rose that "time has been damaged," and the Reapers have come to "sterilise the wound". Feeling that his TARDIS key is still warm, the Doctor sets it up in the middle of the church and the TARDIS slowly begins materialising around it. Pete realises that Rose is his and Jackie's daughter, and when Rose is unable to answer questions about how good a father he was, Pete realises he was meant to die in the accident. Jackie thinks Rose is Pete's daughter with another woman. Pete hands the baby Rose to adult Rose in a fit of frustration, creating a paradox, and a Reaper is able to enter the church. The Doctor declares himself the oldest thing in the church and offers himself to the Reaper, which consumes him and disappears. The TARDIS key goes cold and drops to the ground. Pete realises that he must die to restore the timeline. He runs in front of the car that was originally meant to kill him; it had continued to appear and disappear on the road just outside the church. After Pete is fatally injured, the timeline is repaired, and the Reapers' victims including the Doctor reappear. The Doctor sends Rose to be with Pete, and she holds his hand until he dies. Outside references "The Lamb and Flag", a pub from the sitcom Bottom, is referenced in the episode. It also features the 2002 song "Don't Mug Yourself" by The Streets, indicating the damage to the timeline. Rose believes Pete to be "a bit of a Del Boy", referring to the character from 1980s comedy Only Fools and Horses. The 1987 song "Never Gonna Give You Up" by Rick Astley and the 1987 Communards cover of the 1971 song "Never Can Say Goodbye" also feature in the episode. Production According to producer Phil Collinson, showrunner Russell T Davies came up with the concept for "Father's Day" at an early stage in the planning of the series, as it was a "perfect time travel story". Davies wanted the storyline to be easy to follow and drawn from human emotions. Additionally, the previous seven episodes had established why Rose was a good