sentences:  Resuming acting work in obscure bit parts, he had another career relapse when he was forced to spend 15 months in jail after all for an old warrant served on him for unknowingly missing a court date during his earlier retrial.Robinson credited letters of encouragement from friend Bette Davis with helping him find the strength to overcome his problems.She helped him get his first film role in 13 years in 1971's "Bunny O'Hare".