Sometimes it all adds up to love . . .   By day, Kathryn Wallace is a dowdy, introverted financial whiz whose sole focus is her career. But after hours, to protect her professional interests, she lets loose as Kat Grantham, a sexy, smart, incredibly sassy female dynamo unafraid to speak her mind. Whoever she is, it won’t matter if she’s in jail, indicted for insider trading at her family’s brokerage firm. But one thing’s clear, her heart is not part of the equation. Until a hot variable walks through the doors of her firm . . .   Ben Higgins is working undercover as Bernie “the nerd” Higgenbottom. Somehow he can’t quite believe the innocent “librarian” he’s been sent to investigate is at the bottom of a potentially huge SEC scandal. Until he discovers she’s not who or what she appears to be—and that she’s being set up by someone inside the firm. Now, as much as Ben wants to get Kat under the covers, he’ll have to stay undercover to protect her from a ruthless Wall Street bully . . .