Erin Allin O'Reilly

Bailey asks Richard to join her on the case of a lifetime; Meredith decides to hire a research assistant; Callie shocks Derek; a young pregnant woman needs Shane's help.

A frightening being is summoned, one that even the possessed Sister Mary Eunice is afraid of. As Kit and Lana resort to desperate measures, a despairing Sister Jude finds she can no longer run from her past.