Snowbound with the Scoundrel by Courtney McCaskill

First, he jilted her. Then, he humiliated her…
The Weatherby Wallflowers received their unfortunate nickname when Rupert Dupree, the second son of the Earl of Rottenbury, jilted Clarissa, then decamped for the Continent. When a gossip sheet published Rupert’s letter forcefully rejecting their proposed union, all four Weatherby sisters became laughingstocks. Clarissa hadn’t much been looking forward to marrying a stranger, but she has hated ‘Rotten Rupert’ ever since.

But you can’t keep a Weatherby Wallflower down…
Now the consummate wallflower, Clarissa finds her true purpose: gathering information for the Home Office. It’s the one advantage of blending into the wallpaper—nobody even notices that Clarissa is in the room, much less that she is surreptitiously listening to everyone’s secrets.