Episode Six was a British vocal pop-rock group during the mid 1960s. The band was not well known, but foreshadowed the arrival of Deep Purple in late 1960s. Episode Six was formed in July 1964; in May 1965 Ian Gillan joined and the line-up became as follows:

In 1967 Harvey Shields left the band and was replaced by John Kerrison recording two singles " I Can See Though You " on Pye and " Little One " on MGM. Replaced by Mick Underwood in 1968. Episode Six released several singles on Pye Records in 1966 and 1967, and would have faded into oblivion had Gillan and Glover not gone on to join Deep Purple. The Episode Six song "Love, Hate, Revenge" (itself a cover version originally by American singer Eddie Hodges) was covered by the New Zealand Avengers in 1968, and was a hit on the New Zealand pop single charts.

The group then split up in late 1969.

This then led onto the formation of the Sheila Carter Band with members Alan Coulter (drums), Dave Lawson (keyboards), Tony Dangerfield (bass) and Tony Lander (guitar). After a brief period Carter then teamed up with J. Peter Robinson, Mick Underwood, John Gustafson (ex The Big Three, The Merseybeats etc.) and another of Peter Robinson's Royal College of Music colleagues on guitar. This was a very early formation of the band Quatermass.

Carter later went solo and worked with various musicians such as Peter Walters and Tom Marshall (ex-Harmony Grass).