Scotty Valens confesses to Mike that he saw what happened with Fitzpatrick when they were kids. Mike finally accepts to testify against him after learning the sole witness committed suicide, thus making the pedophile walk free.
4x07 The Key

Summary
When new evidence of a murder case from 1979 is found, Det. Jeffries - who then worked on the case as a rookie cop - sets out to find the killer, fulfilling the promise he made to the victim's daughter 27 years ago.
Sidestories
In 1979, Will Jeffries worked this case. Said he made a "rookie mistake" by promising the victim's daughter, Helen Bradley he will solve the case.
Music
"Best of My Love" - The Emotions
"Sharing the Night Together" - Dr. Hook
"Babe" - Styx
"Makin' It" - David Naughton
"When I Need You" - Leo Sayer
"Broken Hearted Me" - Anne Murray
Notes
New lead: Clothes
Flashback style: Color
Murder weapon: Ice pick
Murder type: Murder 2
Motive: Heat of the moment
Will Jeffries worked the case back in 1979 and stayed in contact with the daughter of the victim after promising her he will solve it.
The case is re-opened when the victim's ski jacket is found with a car key inside.
ADA Thomas is in charge of the Fiztpatrick's trial, where Mike Valens finally decides to testify.
Victim(s)
Doer(s)
Characters
No scenes yet for this episode.
















