Talented mystery author Frances Fyfield ( Shadows on the Mirror , Pocket Bks., 1992) has written a suspenseful, if somewhat depressing, psychological thriller, the second to be published under her real name. The police are not concerned by the disappearance of reclusive Elisabeth Young, a gifted restorer of damaged paintings. A self-employed single woman has every right to go off without a word, and with no evidence of foul play there is no reason for the police to become involved. The lady's would-be boyfriend, barrister Francis Thurloe, is less sanguine, and his mounting conviction that something is seriously wrong compels him to investigate further. His search leads him to the discovery of a shocking, traumatic event in Elisabeth's past--an event that continues to haunt her. Elisabeth, held prisoner by a madman, is indeed in trouble. This literate, gripping novel is recommended for public libraries where Ruth Rendell is popular.-- Elizabeth Mellett, Brookline P.L., Mass.