Our heroine, Penny McKenna, explains her unusual career path.

"I inherited my father’s fiery temper and my mother’s bat-like hearing. I swear she could hear me opening a candy wrapper a mile away. My freckles and red hair came from Nana, as well as her calm ability to listen and observe without being noticed. That got me into trouble more than once as a kid - but hey, if you don’t eavesdrop you don’t learn the best stuff.

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