Justin Emery, recently returned to England after spending six years in Australia, calls on an old friend, Grace de Long, at her cottage in a country village. Grace is a little late and reveals she has been calling on some friends of hers, Arnold and Hester Thaine, but no-one was home. Later that night Grace calls Justin and asks him to accompany her to the Thaine’s house as Arnold has been murdered. Ferrars weaves a clever mystery around the suspects and their alibi’s, finally Justin realises the truth after another murder is committed and the result is the most unlikely scenario the reader can imagine.