'General Hospital' May 31 Sneak Peek: What Really Happened to Nikolas?

Tomorrow on the May 31 episode of General Hospital, the investigation launches in the disappearance of Nikolas Cassadine (Tyler Christopher). Are Jason (Billy Miller) and Sam (Kelly Monaco) responsible? Hayden (Rebecca Budig) thinks so! Will Jordan (Vinessa Antoine) believe her?

Meanwhile, Sonny (Maurice Benard) and Ava (Maura West) clash, as do Finn (Michael Easton) and Obrecht (Kathleen Gati).

Elsewhere, Tracy (Jane Elliot) and Sabrina (Teresa Castillo) have it out over the baby. Will Tracy give Sabrina her child back?