Lady Ingrid Lignum returns to her home one evening to find her husband, Sir Gordon, a Cambridge archaeologist and the ninth holder of the baronetcy, brutally beaten to death. The house has also been robbed of jewelry, porcelain, silver, and a strange clay tablet imprinted with rows of cuneiform characters. Was Sir Gordon killed because he surprised a thief, or because he was marked for murder? This is the question running through the minds of Detective Chief Inspector Sidney Walsh and his investigative team as they interview their many a young woman knocked off her motorcycle by Sir Gordon a few days earlier, causing her serious injuries and enraging her club; two students, whose practical jokes had caused Sir Gordon to threaten them with expulsion from his archaeological site; and Lady Lignum, who has several admirers, benefits financially by her husband's death, and has an unconvincing alibi.