Books: Murders in July

THE GLASS TRIANGLE—George Harmon Coxe—Knopf ($2). Joan English, playing in stock and hell-bent for Broadway, goes to a movie preview with Kent Murdock, nosy news photographer, is presently caught with the corpse of a nasty director. Murdock unties the hangman's knot that threatens her.

THE MURDER AT THE MUNITIONS WORKS —G. D. H & Margaret Cole—Mocmillan ($2). A lady-killing explosion, falling crates, runaway lorries bent on mayhem. The Coles (economists in their spare time) bring a lot of labor-wrangling into this one, and it's not hard to smell a small moral—somewhat bedimmed and bedecked by sex.

THE SECRET WEAPON—Francis Seed-Ing—Harper ($2). Spy stuff:...