Mischief & Matchmaking series (Don't Want You Like a Best Friend; You're the Problem, It's You) by Emma R. Alban

Gwen has a brilliant beyond brilliant idea.

It’s 1857, and anxious debutante Beth has just one season to snag a wealthy husband, or she and her mother will be out on the street. But playing the blushing ingenue makes Beth’s skin crawl and she’d rather be anywhere but here.

Gwen, on the other hand, is on her fourth season and counting, with absolutely no intention of finding a husband, possibly ever. She figures she has plenty of security as the only daughter of a rakish earl, from whom she’s gotten all her flair, fun, and less-than-proper party games.

“Let’s get them together,” she says.

It doesn’t take long for Gwen to hatch her latest scheme: rather than surrender Beth to courtship, they should set up Gwen’s father and Beth’s newly widowed mother. Let them get married instead.

“It’ll be easy” she says.

There’s just…one, teeny, tiny problem. Their parents kind of seem to hate each other.

But no worries. Beth and Gwen are more than up to the challenge of a little twenty-year-old heartbreak. How hard can parent-trapping widowed ex-lovers be?

Of course, just as their plan begins to unfold, a handsome, wealthy viscount starts calling on Beth, offering up the perfect, secure marriage.

Beth’s not mature enough for this…

Now Gwen must face the prospect of sharing Beth with someone else, forever. And Beth must reckon with the fact that she’s caught feelings, hard, and they’re definitely not for her potential fiancé.

That’s the trouble with matchmaking: sometimes you accidentally fall in love with your best friend in the process.

Setting: 1850s England (mid-Victorian)

Historical fiction, romance, mid Victorian, 1850s, series, adult

Eleventh Hour by Elin Gregory (The Carstairs Affairs #1)

Endorsement from submitter: "Spies! Crossdressing! Drama! Action! Romance! The only way these historical spies can capture the villains is to pose as a married couple next door - only they dont have any lady agents available… Men must wear dress to save the country!"

Borrowed from the Secret Intelligence Service cipher department to assist Briers Allerdale - a field agent returning to 1920s London with news of a dangerous anarchist plot - Miles Siward moves into a 'couples only' boarding house, posing as Allerdale’s 'wife'. Miles relishes the opportunity to allow his alter ego, Millie, to spread her wings but if Miles wants the other agent’s respect he can never betray how much he enjoys being Millie nor how attractive he finds Allerdale.

Pursuing a ruthless enemy who wants to throw Europe back into the horrors of the Great War, Briers and Miles are helped and hindered by nosy landladies, water board officials, suave gentlemen representing foreign powers and their own increasing attraction to each other.

Will they catch their quarry? Will they find love? Could they hope for both?

The clock is ticking.

Setting: 1920s London