Mum's the Word for Murder

An author and a cop chase a cunning serial murderer across El Paso Asa Baker stares at his typewriter, cursing the empty page. His publishers are clamoring for another Western novel, but Baker is fed up with cowboys. He needs a new kind of hero-and one is about to fall in his lap. His friend Jerry Burke is one of the top cops in El Paso, and he's about to drag Baker into a plot more outrageous-and more dangerous-than anything the Old West has to offer.   A troubling personal ad has appeared in the local paper. Addressed to Burke, it warns that someone will die tonight at 11:41 p.m. And as promised, the body appears at 11:41 sharp-setting Burke and Baker on the hunt for an ingenious serial killer who advertises murder, but never leaves a trail.