Born in Tuddal in 1943, Sletta made his stage debut at Nationaltheatret in 1964. His next assignments were with Riksteatret from 1965 to 1967, and with Trøndelag Teater from 1967 to 1969.
Poviedkové príbehy spája väčšinou irónia a sarkazmus, jednotnú a uvoľnenú dramaturgiu naruší azda len prílišná vážnosť jedného z príbehov, čierny humor záverečného určite nie.