In a flashback to 2006, Shawn and Gus are backstage at a "Billy Lipps & The Guys Behind Me" concert. The second Billy gets off stage, Lassiter is there to inform Billy that the SBPD is bringing him in for questioning regarding the murder of Melinda Lane - a woman who drowned in the pool at his mansion years ago. Billy's biography just came out and apparently there is information that points to Billy being the murderer. In that moment, Shawn and Gus urge Billy to somehow exonerate himself, but Billy has no explanation or alibi. He doesn't even remember what really happened that night. Lassiter has no choice but to arrest him.