5 APRIL 1930, Page 30

. IT WALKS -BY NIGHT.- By John Dickson Carr. (Harper's.

7s. 6d.)This book is certainly, _ to quote its opening words, " not least foul among these night-monsters." The hero and heroine, in the inverted fashion of this class of fiction, are a maniac and a drug addict, and the junior lead is played - by a mild case of megalomania. The detective observes the canon of omniscience and, inconsistently enough, fails to prevent two murders after the first one. In pomt of fact the first one is not discovered at all until the per petrator of the second has been brought to justice. It is all, in fact; very Misleading and -delightful. Mr'. Carr writes with a proper sense- of a detective -raconteur's slight thick-. headedness. The story may be read either as itself or as

a btirlesclue of itself. In both it is above the average. •