Mystery writer Lutz here offers a contemporary horror tale that few readers will be able to put down. Things begin to fall apart for computer consultant Allie Jones when she discovers that her live-in lover, investment broker Sam Rawson, has strayed. After throwing him out, she needs a new roommate to help pay the rent. A discreet newspaper advertisement brings in Hedra Carlson, a mousy young woman who quickly begins to idolize and imitate her. A quiet air of menace develops, enhanced by Lutz's simple, direct prose. Is Hedra literally stealing Allie's life? Is Sam, who pleads his way back into her affections, really faithful this time? Is the aspiring young playwright who lives upstairs as open and supportive as he seems? And who is behind the spate of obscene telephone calls from men who seem to know her by name--perhaps a sleazy client after her body as well as her computer expertise? The ensuing violence leaves Allie alone, friendless and a fugitive. Although marred by its fairly pat conclusion, this psychological thriller remains an enjoyable diversion.