"Dangerous Rendezvous" is the 19th episode of Captain Scarlet and the Mysterons, a British 1960s Supermarionation television series co-created by Gerry and Sylvia Anderson. Written by Tony Barwick and directed by Brian Burgess, it was first on 9 February 1968 on ATV Midlands. In this sequel episode to "Crater 101", Spectrum uses the crystal pulsator removed from the Mysterons' lunar outpost to contact the enemy and propose a cessation of hostilities between Earth and Mars.