The fact that this guy knew that raised Gert's suspicions even further. Why would someone take a wild stab like that if they didn't already know something about it?
"How'd I get here?" she asked, narrowing her eyes at him behind her thick framed glasses. Gert didn't want to sic Old Lace on him, but if he ended up being one of the badguys, she would do what she had to do.