Sledge Hammer! (1986)

S1E14 State of Sledge

After Hammer takes the head of a Satanic cult into custody, Internal Affairs mandates that the cult leader is entitled to his one phone call. Shortly after the call is made, the precinct finds itself encircled by a throng of crazed devil worshippers. With all communication lines severed, Hammer comes up with a daring strategy to break the siege and restore order.