In 1970 Tony Parker was permitted by the Home Office to make a series of visits to HMP Grendon Underwood, the UK's first psychiatric prison, there to interview inmates and staff for a study of the institution and its unique community.

'Tony Parker deserves a place in any future history of literature for his contribution to the creative use of the tape-recorder... We can only guess at the qualities of patience and perceptiveness which have enabled Mr Parker to make of his material one of the most important studies ever to have been published of the habitual criminal.' TLS

'The reader will find himself as deeply involved with his characters as Mr Parker is himself.' Spectator