A worldly, elaborate but exciting suspense story takes Rupert Frost, a middle aged psychologist ""cauterized"" by grief since the death of his wife from London to Italy, at the invitation of a friend, James Westlake. In Italy he finds not only forgetfulness- but a twofold involvement; with Bianca, frivolous and glamorous, and the sensuous enchantment of an affair; and with Greenaway, a physicist, one of the members of the tour they are taking who appeals to him as a doctor for help, confides that he has already committed certain treasonable breaches of security through a sort of side-tracked idealism, and that he is now ready to turn over some even more devastating papers to the Communists. An unstable character, Greenaway suicides leaving the papers in Frost's hands; Frost, foolishly does not send them through the mails to London, selfishly protracts his stay with Bianca (thus creating-perhaps improbably-all the trouble to follow) so that he must dodge some dangerous men through Padua, Venice, Rome, subdue his suspicions of Bianca, and face his own responsibility in Westlake's death at the hands of his pursuers...... For those who remember The Enormous Shadow, etc. (Harper) there's a sophistication of character and circumstances to lend a dressier tone to violence.