Death and Virgin. Echo of strangers

An attempt by his own eyes to look at the nauca - a river nymph - which, according to rumors, was seen in the vicinity of Wincheter, turned out for Miss Carmodi, her young niece of Connie and relatives - a married couple Tidson, evidence of a brutal murder of a boy, whose body was caught from a stream.
Mr. Tidson assures everyone that the boy probably drowned Najad, but Miss Carmodi begins to suspect Tidson himself of this crime. What grounds can she have for this? And after a while they find the body of another teenager ... The police are lost in conjecture, but Mrs. Bradley will come to their aid.
In their favorite boat of the beautiful, like the Greek God, but, unfortunately, the deaf -mute young man of Cox is found to the corpse of a corpse. a person who was engaged in blackmail. And soon there is another mysterious murder, but already on the estate in which Sir Adrian, Grandfather Francis and a passionate athlete, gathered players to participate in a cricket match.
Are these crimes related to each other? And do Francis, his twin brother Derek and Sir Adrian himself have something to do with them? Mrs. Bradley has to figure it out