This episode takes place in Palestine in 1190.
Only episodes 1 and 3 are currently in the BBC Archive, the others remain lost. This episode was missing from the archives until 1999. A 16mm film print of the episode was bought by a collector at a film fair in New Zealand in 1998 and the next year it was returned to the BBC for them to make a Digital Betacam copy for subsequent release on video and DVD. The original film print remained the property of the collector who bought it.
Nicholas Courtney auditioned for the role of Richard the Lionheart. Douglas Camfield remembered him when he cast him as Brett Vyon in The Dalek's Masterplan and as Colonel Lethbridge-Stewart in The Web of Fear.
The Audio from Episodes 2 and 4 exist also.