A serial in six parts by DUNCAN ROSS , With Bernard Horsfall Kate Coleridge
Shirley Dixon , Peter Pratt 5: The Pavement Artist
Ian Lambert is searching for the true story behind Professor Penmore's conviction for betraying Ofticial Secrets. Pat Penmore , Ian's fiancée, is convinced of her father's innocence. The trail leads Ian to Cornwall, where several mysterious attempts are made on his life. Things aren'eased by Pat's sudden arrival, in a very jealous mood....
Donald Fraser TOM WATSON
Ian Lambert BERNARD HORSFALL Pat Penmore KATE COLERIDGE Trev BASIL JONES
Emma Cresswell SHIRLEY DIXON Supt Gage PETER PRATT
Van Hove MICHAEL TURNER Cornish Sergeant
PETER BALDWIN
Atkins PETER TUDDENHAM Vallins JOHN GABRIEL
Hawkins WILFRID CARTER Patrick KERRY FRANCIS Barman PETER BALDWIN Trelawney BRUCE BEEBY
Sergeant Rose DAVID BRIERLEY Produced by BETTY DAVIES