When profiling a series of child abductions and murders, the team discovers that one of the cases may not be the handiwork of the serial killer they apprehended.
Elegy in C Minor opus 24: Molto Adagio — Anne Gastinel
I believe this played at the end of the show as the detective is packing up his office when it's determined that Kyle was killed by his older brother & not the pedaphile who killed the other 2 boys