Marc Castleman, Army psychiatrist, tangles with psychosomatic and financial mis-leads as a maladjusted musician, his accident-prone sister, and an allergic -- all with a trust fund in common -- die. Marc, his personal and professional record at stake, combines medical and criminal evidence to close the case. Entertaining, if pretty conveniently planned and not up to her first, Darkness of Slumber (Lippincott, 1944).