Doctor Thomas Seabrook has been on edge for months now, thanks to a threat he received back in January. Now in July he still can't relax. When he is then stabbed at work, he fears that this is the realization of the threat. Has an old enemy surfaced? Is it a disgruntled patient? Or is simple jealousy responsible? Will he survive long enough to find out and what will Detective Inspector Ivor Gunn and Detective Sergeant Arthur Jobb and their team discover?