Collin Masters was used to being in control—of his company, his love life and especially his emotions. But the unexpected arrival of his three-year-old twin nieces threatened to make the fast-moving ad exec come unglued.

Sabrina Sinclair was the only person who could bail him out of this mess. Unfortunately, she'd quit working for him just weeks earlier, and he was pretty sure she hated him.Luckily, Collin was masterful at getting his way. Before you could say "daddy," his former assistant was his nanny, living under his roof. Sabrina's room was just steps from Collin's bedroom—suddenly a little too close for comfort. Playing house with Sabrina was about to get very out of hand….