Batman - Season 3 - Eps 23: I'll Be a Mummy's Uncle
With plans to build an indestructible empire, King Tut goes in search of Nilanium, the world's strongest metal. But with the only known deposit lying directly beneath Wayne Manor, Tut's tunneling soon leads him to the discovery of a lifetime - the Batcave itself. With their secret identities in jeopardy, Batman and Robin race to stop him before his find is leaked to the world.
About Batman

Title: Batman
First Air Date: 1966-01-12
Last Air Date: 1968-03-14
Status: Canceled
Rating: 7.3/10 (from 547 votes)
Language: EN
Seasons: 4
Total Episodes: 120
Network: ABC
Genres: Sci-Fi & Fantasy, Comedy, Action & Adventure
Production Companies: 20th Century Fox, Greenway Productions
Synopsis
Wealthy entrepreneur Bruce Wayne and his ward Dick Grayson lead a double life: they are actually crime fighting duo Batman and Robin. A secret Batpole in the Wayne mansion leads to the Batcave, where Police Commissioner Gordon often calls with the latest emergency threatening Gotham City. Racing to the scene of the crime in the Batmobile, Batman and Robin must (with the help of their trusty Bat-utility-belt) thwart the efforts of a variety of master criminals, including The Riddler, The Joker, Catwoman, and The Penguin.
Cast

Adam West
Batman

Burt Ward
Robin

Yvonne Craig
Batgirl

Neil Hamilton
Commissioner Gordon

Stafford Repp
Chief O'Hara

Alan Napier
Alfred

William Dozier
Narrator (voice)