ALFA Investigations Books in Order
Part ofChelle Bliss Books in OrderExplore the ALFA Investigations books by Chelle Bliss in order with quick summaries, series background, and help choosing the right starting point.
Last updated: January 13, 2026
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Publication Order
5 books
Guilty Sin
by Chelle Bliss
2018
An ALFA investigator takes on a case that hits close to home and drags a woman into danger with him. As attraction grows, they have to solve the threat before it destroys the chance they never saw coming.
Wicked Impulse
by Chelle Bliss
2016
An ALFA investigator follows a hunch that pulls him into a dangerous case, and into a woman who refuses to be protected. Their attraction is instant, but giving in could expose them both to the people they’re chasing.
Top Bottom Switch
by Chelle Bliss
2016
A short, high-heat romance set in the ALFA Investigations world, where two strong-willed people test boundaries and discover they want more than a quick release. Trust becomes the hottest thing they negotiate.
Unlawful Desire
by Chelle Bliss
2015
Rules exist for a reason, until desire makes them feel optional. When an ALFA investigator gets involved with a woman tied to his case, he has to break the right laws, and the wrong habits, to keep her safe.
Sinful Intent
by Chelle Bliss
2015
A private investigator with ALFA takes a case that drops a tempting complication right in his path. As clues stack up and danger closes in, the only person he trusts might be the one he can’t stop wanting.
Series background & context
ALFA Investigations is Chelle Bliss’s romantic suspense series, following a private investigation team that gets pulled into dangerous cases and even more complicated relationships. Each book focuses on a different couple, but the agency, and the found-family vibe around it, stays constant.
The stories blend high heat with real stakes. A case might involve a missing person, a threat that won’t go away, or someone being targeted, and the romance grows while the investigators work to put the pieces together. Titles like Sinful Intent, Unlawful Desire, Wicked Impulse, and Guilty Sin keep the pace quick and the tension high.
The work is risky, the relationships are worse.
There are also shorter reads like Rebound and Top Bottom Switch that add extra time in the world.
This page lists the ALFA books in order, explains what kind of suspense to expect, and helps you decide whether to start with the first case or jump in with a trope you love.
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