Swallowing his pride, Hugo asks Balagan for help. Walt, Hugo’s police mentor, is retiring, but one unsolved case still haunts him. Twenty years ago, a teen girl disappeared and Walt is convinced her ex-boyfriend, Stephen, killed her. But because the girl’s body was never found, Walt could never charge Stephen. Now with Balagan’s help, Hugo hopes to find the one piece of evidence that will put Stephen behind bars before Walt takes matters into his own hands. Pippa comes to Balagan with some startling news in Rosemary’s case: the police have finally arrested a suspect.