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Rhona MacLeod is Lin Anderson's Glasgow-based forensic scientist, whose cases move between the city and communities across Scotland.

Rebecka Martinsson is the Stockholm tax lawyer drawn back to Kiruna in Asa Larsson's six-book Swedish crime series.

Rylan Flynn can communicate with ghosts in Dawn Merriman's paranormal mystery series, which starts with The Spirit Girls.

Rai Rahotep is the Seeker of Mysteries in Nick Drake's four-book historical mystery series set in ancient Egypt.

Ruby Booker is the third-grade lead of Derrick Barnes's Ruby and the Booker Boys chapter-book series, which follows her school and family life.

Raine Campbell is the young witch at the center of Judith Berens's nine-book School of Necessary Magic spin-off series.

Riley MacPherson leads Diane Chamberlain's two-book family suspense story, which begins when her father's belongings expose a buried secret.

Rose Gardner is Denise Grover Swank's Fenton County sleuth, whose psychic visions lead from a sheltered life into murder investigations.

Rabbi David Small is the rabbi and amateur detective in Harry Kemelman's Massachusetts mystery series.

Ryder Creed is a former Marine and K9 search-and-rescue handler in Alex Kava's connected crime-thriller novels.

Ruby Dove is a dress designer and former chemistry student who investigates 1930s mysteries with Fina Aubrey-Havelock in Rose Donovan's series.

Rob Walker is the Special Forces operator in John Etterlee's four-book military thriller series, which begins with a cartel kidnapping.

River is the young wolf shifter at the centre of Charlotte Abel's Sanctuary series, set in the secluded Colorado community of New Eden.

Robbie Munro is William H.S. McIntyre's Scottish defence solicitor, handling criminal cases through thirteen legal mysteries.

Rafferty is the Dallas private investigator in W. Glenn Duncan's nine-book crime series, beginning with Rafferty's Rules.

Ryan Savage is the lead of Jack Hardin's ten-book action-thriller series, which begins with Savage Coast.

Ray Elkins is the northern Michigan sheriff in Aaron Stander's twelve-book mystery series, beginning with Summer People.

Roscoe Conklin is the retired detective in Davin Goodwin's two Bonaire-set mysteries, drawn back into investigations after moving to the island.

Rufinus is the young legionary drawn into Emperor Commodus's court in S.J.A. Turney's Roman historical Praetorian series.

Ricki James is C.R. Chandler's National Park Service criminal investigator, working serious cases in northwest Washington.

Rin, or Fang Runin, is the war orphan at the centre of R.F. Kuang's Poppy War trilogy, from military academy to civil war.

Royce Melborn is the former assassin and thief in Michael J. Sullivan's Riyria Revelations, working alongside Hadrian Blackwater.

Rand al'Thor is the Dragon Reborn in Robert Jordan's Wheel of Time, which begins with The Eye of the World.