Protective Measures (True North Bodyguards, 3)

UNDERCOVER BODYGUARD 

After an attack at a military charity gala, navy commander Leo Darius learns someone wants to kill him—and kidnap his two daughters. And there's nothing the recently widowed single father won't do to protect his girls…even if it means asking a beautiful bodyguard to pose as his girlfriend. Though security expert Zoe Dean agrees to handle the threats and near-fatal assaults, she refuses to get attached to the handsome commander and his lovely daughters. But with the would-be kidnappers closing in, saving Leo and the little girls, while protecting her heart, may be one mission Zoe can't master.