[s4e7] Memoriam Site

: 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

: Reid suspects his estranged father, William Reid, may have been involved in the murder. This leads to a tense reunion between the two, as Spencer confronts the man who abandoned him and his mother years earlier. [S4E7] Memoriam

: Guest-starring as Spencer's father, William Reid. : Spencer’s mother, Diana (played by Jane Lynch),

: Spencer’s parents and the local sheriff had hidden the truth about Michaels' death for years to protect the family and the community, a secret that had contributed to the family's eventual collapse. Emotional Significance This leads to a tense reunion between the

The episode moves away from a traditional "unsub of the week" format to explore a deeply personal mystery:

: 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.