Avi receives a call about a new murder at an abandoned house. The victim is his close friend and mentor, Professor John Wentworth .
John is found with a gun underneath him, and the word "Father" (written as "Av" in Hebrew or "father" in English depending on the translation/viewer interpretation) is engraved in blood on his forehead.
Captain Kathleen is placed on administrative leave following the shooting, her first time using her weapon in the line of duty. The Cliffhanger Ending
As Avi and Janine Harris attend a , the finale shifts from resolution to a shocking new mystery: