Dr. Helen Magnus recruits a forensic psychiatrist to join her in a quest to study creatures.

As Will attempts to help Alexi cope with his abnormality, Helen gets a visitor from her past.

Dr. Magnus, Ashley and Will release three women from a crypt in Scotland and bring them back to the Sanctuary for refuge.

An investigation into a string of robberies leads Dr. Magnus and Will to a crime ring.

Dr. Magnus and Will are stranded after their plane crashes while returning from the Himalayas.

When a mating pair of abnormals is brought in for scientific study, the Sanctuary team begins to exhibit attractions for each other.