[s4e7] Memoriam ✰ | OFFICIAL |

: It is eventually revealed that Reid's father, William, did not kill Riley Jenkins. Instead, he confessed to killing Gary Michaels, a pedophile who had targeted Spencer after already murdering Riley.

: While the investigation unfolds in Vegas, J.J. (Jennifer Jareau) goes into labor three weeks early. At the end of the episode, she gives birth to her son, Henry, and names Spencer as the godfather , reinforcing the BAU's role as his "chosen family". [S4E7] Memoriam

Haunted by nightmares of a young boy’s murder, Reid stays behind in Las Vegas to investigate the 1984 death of Riley Jenkins. : It is eventually revealed that Reid's father,

The episode moves away from a traditional "unsub of the week" format to explore a deeply personal mystery: (Jennifer Jareau) goes into labor three weeks early

: Guest-starring as Spencer's father, William Reid.

: Spencer’s mother, Diana (played by Jane Lynch), is forced to confront her own suppressed memories. In a dramatic move, she goes off her medication to help Spencer uncover the truth about what happened the night Riley died. Key Reveals and Twists