When the Frank family throws their annual clambake, Peter Frank will make the rounds, charming every woman on the guest list. Top of that list are Maya, his girlfriend; Catherine, his high school sweetheart; and Leanne, the legal guardian of his son. Expecting an extravagant feast, they're instead lured into a room to find ... Tilly. Tilly explains that she and Peter plan to get married, Maya and Peter are through, Peter will no longer be investing in Catherine's company, and Leanne must give up her guardianship. When a chandelier falls and crushes the bride, they're suspects with three perfect motives. Now they'll have to figure out who really did kill Tilly.