S1·E26 The Double-O-Nothing Affair

Thrush has developed a new mobile force that enable them to disrupt UNCLE operations. Mark infiltrates the group and tapes their transmissions. He makes his getaway, hides the tape in his rented car, and contacts April but he is shot in the leg. The car and tape are stolen by a man who overhears his transmission to April. Mark is taken off the case; April is assigned the case.