TK gets a huge surprise on his 30th birthday when his stepdadEnzo arrives in Austin along with TK's young half-brotherJonah; Owen's resentment of Enzo turns physical; Tommyis determined to push through her latest crisis; Wyattattempts to talk-down a suicidal caller and the 126 mustperform a dangerous surgery in the field after a man is impaledin a tree.
