After a successful career writing for radio, R.D. WINGFIELD turned his attention to fiction and created the character of D.I. Jack Frost, who has featured in the titles A Touch of Frost, Frost at Christmas, Night Frost, Hard Frost, Winter Frost and A Killing Frost. The series has been adapted for television as the perennially popular A Touch of Frost starring David Jason. R.D. Wingfield died in 2007.