Tonight at 9pm/8c, Amy Winslow will have to work hard to help an old colleague overturn a murder conviction. Must Solve Sundays continue with "Mystery 101: An Education in Murder," an all-new Signature Mystery. Live tweet along with the premiere using #Mystery101. | Hallmark Mystery

If you can't wait for tomorrow's Signature Mystery "Mystery 101: An Education in Murder," we have a special sneak peek available right now. Tune in tomorrow at 9pm/8c for the premiere. | Hallmark Mystery

Before the premiere on March 29, take a trip behind the scenes with this special look at the Signature Mystery "Mystery 101: An Education in Murder"! | Hallmark Mystery

In one month, Jill Wagner returns as the mystery literature master Amy Winslow in the all-new Signature Mystery Series premiere of "Mystery 101: An Education in Murder"! Mysteries the Hallmark way! | Hallmark Mystery