Ice Angel Mysterious Book Report No. 469 by John Dwaine McKenna   Despite it’s dumb-assed title, Ice Angel, (Pegasus Crime, $25.95, 272 pages, ISBN 970-1-64313-811-4) by Matthew Hart, is a cool piece of crime fiction that has an exciting premise, a dynamic, fast-moving plot and an interesting cast of characters—all of whom are trying to rob, swindle, outwit and kill each other somewhere north of the Arctic circle in