The Waiting Game — Jayne Ann Krentz

The answer was crystal clear...

Sara Frazer had no choice. She had to break into Adrian Saville's house to look for clues to the whereabouts of her Uncle Lowell. And once she was inside, she couldn't help doing some additional snooping around - just a little bit . . .

Long before he opened the front door, Adrian Saville knew someone was in his house, for he had a special alarm system that trapped an intruder inside instead of keeping him out. But when Adrian saw who his visitor was, he couldn't believe his eyes. Sara. He had dreamed about her, had fantasized about their inevitable meeting - a meeting that was inevitable because only Adrian knew what clues Sara was looking for!