M.M. (Marjorie) DeLuca spent her childhood in Durham City, England. After studying at the University of London, Goldsmiths College, she moved to Winnipeg, Canada, where she worked as a teacher of English Literature, then a freelance writer. She studied Advanced Creative Writing with Pulitzer Prizewinner Dr. Carol Shields.

She’s the author of seven gripping suspense novels: Amazon bestseller, THE PERFECT FAMILY MAN (Canelo: an imprint of Penguin Random House); BookScan Top 100 and Apple Books Top 100 bestseller, THE SECRET SISTER (Canelo: an imprint of Penguin Random House); and critically acclaimed historical suspense, THE SAVAGE INSTINCT (Inkshares), which received starred reviews from Publishers’ Weekly and Booklist, THE NIGHT SIDE, a dark psychological suspense with paranormal elements, LILAH,  a romantic suspense, contemporary suspense, THE DIVORCE PARTY, and her latest destination thriller, DEADLY DIAMONDS (October 8th 2026). She's also written an exciting YA sci-fi trilogy, THE FOREVERS, THE PARASITES and THE FEEDERS as well as a historical sage, THE PITMAN'S DAUGHTER,

She’s been a panelist at Thrillerfest and Bouchercon, has presented workshops at When Words Collide, Calgary (2025) and been featured on top podcasts, The Thriller Zone, The Poisoned Pen Bookstore, Bookwild, Sisters in Crime National, Sisters in Crime Canada West and Crime Writers of Canada.