The Ones You Love

S4 E9: To pressure Artie into reversing the Astrolabe's effects, Brother Adrian sends deadly artifacts to Myka's pregnant sister, Pete's ex-wife and Claudia's brother. As the agents race to save their loved ones, Mrs. Frederic and Steve go to the Vatican where they discover an impossible truth about Artie and Adrian. By the end of the day, one team member lies dead in Warehouse 13.