In the fourth season of the popular sci-fi series, home remains elusive for physics genius Quinn (Jerry O'Connell) and his cohorts Wade (Sabrina Lloyd), Rembrandt (Cleavant Derricks) and Maggie (Kari Wuhrer), who find countless adventures as they "slide" through time and space. In this season, O'Connell's brother Charlie joins the cast as Quinn's long-lost brother Colin. Guest stars include Shane West and Malcolm Jamal-Warner.