"As we trace the amazing adventures of Tony Beaucourt, we are caught up breathlessly by the trail of horror and ruthless disregard of human life left by the mysterious Mr. Brent. This is a gripping mystery story which urges one on in its excitement, and defies all attempts at solution until the last few pages." "With the scene all in the atmosphere of international politics and an official of the Foreign Office as one of the principal character, [this] is a thriller of the most exciting type. There are sinister Chinese and Soviet operatives seeking an important and secret pact, and always in the background lurks the monster, Mr. Brent himself."