Matilda investigates what appears to be a robbery with clues reminiscent of her own mother's disappearance - and then Aunt Jane finds a body and the case becomes a murder.
Matilda is close to finding the identity of the killer, but there are other parties, much closer to home, who'd prefer Matilda not to disturb too many secrets.
The stage adaptation of Jane's book endures numerous snafus before opening night. Meanwhile, Mattie searches for new clues in the case of her missing mother, but an onstage murder brings her to the theatre.
'80s new wave band Volcanic Youth is in town to record a new album. Mattie is assigned the unglamorous job of searching for a lost dog, but the case is put on hold when one of Volcanic Youth's members turns up murdered.
Contending with another murder and a missing lead actress, the theatre company is forced to switch up the cast, but their production is a mess. Despite Mattie's objections, Beth and Cat continue to pursue leads on their own.
Mattie investigates a new victim who was stabbed in the back with a kitchen knife. While searching for clues, she finds the recording the lead singer made before she died, but an incident from the past may be the key to solving the case.
