Christine Weatherup

TK gets a huge surprise on his 30th birthday when his stepdad Enzo (guest star Henry Ian Cusick) arrives in Austin along with TK’s young half-brother Jonah; Owen’s resentment of Enzo turns physical; Tommy is determined to push through her latest crisis; Wyatt attempts to talk-down a suicidal caller and the 126 must perform a dangerous surgery in the field after a man is impaled in a tree.

When several women go missing in Virginia, the BAU must figure out what they have in common in order to find them.

As the storm rages, patients are brought to the hospital by the busload and resources dwindle; a doctor's life hangs in the balance.