When a previously unknown Abnormal attacks Abby, Magnus and Will attempt to communicate with the creature using music - while Henry and Gavin retrace Abby's steps to find out what happened.

Cast: Amanda Tapping, Robin Dunne, Ryan Robbins, Christopher Heyerdahl, Pascale Hutton, Jim Byrnes, Carlo Rota, Robert Lawrenson, Kurt Evans, Anjali Jay, Conrad Coates