St. Elsewhere S03 E09 Up on the Roof

"It couldn't happen anywhere else."

A bone-marrow specialist arrives to perform a transplant between two feuding brothers and quickly befriends Annie; the last firefighter gives Caldwell a parting gift; Morrison's next door neighbor experiences a tragedy while baby-sitting Pete; Rosenthal overcomes her fears and begins an affair with Clarendon; and White's killer is cornered on the hospital roof.