Lady Charlotte and the Lending Library (The Rogue's Alliance #1)
Angelina Jameson

Lord Ashford must learn whether his sister is satirized in Caroline Lamb’s upcoming novel. An encounter near White’s diverts the marquess from his mission as Ashford becomes involved with Lady Charlotte’s plan to save Thorne’s. He soon discovers the campaign to close the library was instigated by the Rogue’s Alliance, a mysterious London criminal coalition.
As Charlotte and Ashford spend time together, Charlotte discovers that first impressions aren’t always to be believed, and Ashford begins to think the lady isn’t as unsuitable as he first imagined.