Hot Spot by Susan Johnson
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I am not a huge fan of Susan Johnson (who, as far as I can tell, doesn't have a website). I think she's had some good books (Pure Silk and her anthology stories) and some terrible ones (Blonde Heat, Temporary Mistress). But this one caught my eye. Anything with romance and superheroes, such as Julie Kenner's Aphrodite series, sounds interesting to me. I don't know that I'll buy this one right off (I would if it was mass market, but I'm not sure with the trade pb pricetag), but I'll definitely check it out at the library and consider buying it later.
Here's the blurb from Amazon:
Stella Scott doesn't date customers. So when a superhero-in-the-flesh strolls into her comic book store, snapping up rare editions and insisting on taking her to dinner, she knows she's in trouble. It isn't long before Stella finds herself revising her little rule. But while she's having a blast between the sheets, there's no way she's going to let herself do something stupid...like fall head over heels in love. Hopefully it isn't too late...