Margins
I.S.S. book cover
I.S.S.
The Completed Series
2025
First Published
4.78
Average Rating
998
Number of Pages

I didn’t fear my nightmares. I loved them... and they loved me. Join Arabella and her possessive monsters as one human woman finds the strength—and the monster within herself—to protect those she loves. Abandoned at the gates of the Institutum Sequuntur Somnia (I.S.S.), Arabella grew up among the creatures humanity fears most. With pink hair, a vision impairment, and a fearless, slightly naive heart, she becomes the unshakable anchor to a team of lethal Nightmares—from the monster under the bed to the overbearing son of Lucifer himself. As Arabella unravels the mysteries of her past and the twisted secrets buried in I.S.S., she forges unbreakable bonds with her monstrous mates—men born of darkness and danger, yet hopelessly devoted to her. Their connection is fiery, forbidden, and full of heart-pounding steam. Together, they fight enemies from within the institute and beyond, challenging every rule meant to keep them apart. M. Sinclair’s I.S.S. Series is a thrilling and emotional slow-burn reverse harem romance that delivers a possessive harem, a sassy yet slightly naive heroine, monsters with claws and hearts, “touch her and die” protectiveness, and the perfect mix of vengeance, spice, and happily ever afters. Content This series contains mature themes for 18+, steamy scenes, trauma recovery, and dark fantasy violence. Please read responsibly.

Avg Rating
4.78
Number of Ratings
9
5 STARS
78%
4 STARS
22%
3 STARS
0%
2 STARS
0%
1 STARS
0%
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Author

M. Sinclair
M. Sinclair
Author · 86 books

International Bestselling Author M. Sinclair is a Chicago native, parent to 3 cats, and can be found reading almost every moment of the day... yes, that includes while at work. Despite being new to publishing, M. Sinclair has been writing for nearly 10 years now. Currently, in love with the Reverse Harem genre, she plans to publish an array of works that are considered romance, suspense, and horror within the year. She also believes that there is enough room for all types of heroines in this world and that being saved is as important as saving others. So be a princess and a warrior! Just remember to love cats... that's not negotiable. Follow me! Instagram: msinclairwrites (New content announced!) Facebook: @msinclairwrites or M Sinclair Email: MSinclairWrites@gmail.com

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