Villains are always trying to find the batcave. That's why it is important to have a decoy ready. STRICTLY NO TREPASSING First seen in “The Joker’s Last Laugh” / “The Joker’s Epitaph” Written by Peter Rabe and Lorenzo Semple Jr. Directed by Oscar Rudolph Season 2, Episodes 47 and 48 Production code 9747 Original air dates: February 15 and 16, 1967