[In The Loo Sanction,] Trevanian works to give rip to his mystery with the unusual: a villain who holds all the patents on sexual excitement, a vicar who's head of a secret government department to assassinate assassinators, a hero who's a secret agent and an art critic. But the author uses up all his ingenuity with the amusing trimmings and the suspense situation may be a man shooting his way out of a house packed with armed guards, a routine improbability which now rates zero acceptability. Incidentally one of the victims in this extravaganza is murdered in a lavatory.

Oswell Blakeston, in a review of "The Loo Sanction" (© copyright Oswell Blakeston 1976; reprinted with permission), in Books and Bookmen, Vol. 21, No. 6, March, 1976, p. 57.