A killer is working overtime at Ellis Hospital. It's the third violent death among the hospital staff in a year, and Ward 8's nurse Adele Monsarrat is certain that someone close is behind the onslaught. But who in this pressure-cooker workplace bears the mark of true madness? As Adele starts probling, terror spreads among the staff while a maniac watches and waits. PULSE is the first in the Adele Monsarrat mystery series.