Frank Randall is Claire's husband in the 20th century. An intellectual and academic, Frank is also a loyal husband who is willing to stretch the realm of scientific possibilities in order to find his missing wife. His search leads to a dark alley and a dangerous side of his own nature.
Jonathan Wolverton Randall is a captain in british army who comes across Claire (and attempts to rape her) in the Scottish Highlands where he's been terrorizing the locals. Randall is responsible for attacking Jenny Fraser Murray (Jamie's sister) years earlier and the scars on Jamie's back. Randall is a brutal man who rules his soldiers by fear. The only one he truly loves is his younger brother Alex.
Jack & Frank Randall (TOBIAS MENZIES)
Jonathan & Frank Randall are portrayed by actor Tobias Menzies, an accomplished stage, film and television actor. He graduated from the Royal Academy of Dramatic Arts in 1998 and began his acting career in Foyle's War, Midsomer Murders, and Casualty. He also appeared in the controversial drama A Very Social Secretary. He is best known to international audiences as Marcus Junius Brutus from the television series Rome and Edmure Tully from the HBO show Game of Thrones.
He had a major film role in The Low Down with Aidan Gillen and featured in the 2006 reboot of the James Bond franchise, Casino Royale. 2007 sees him appearing as William Elliot in ITV's production of Jane Austin's classic book, Persuasion and as Derrick Sington in the Channel 4 drama The Relief of Belsen.
On stage, his credits include the young teacher Irwin in Alan Bennett's The History Boys and Michael Blakemore's West End production of Three Sisters for which he was nominated for the Ian Charleson Award. He was a critically acclaimed Hamlet in Rupert Goold's Hamlet at the Royal Theatre.
Frank Randall and his wife Claire are in the Scottish Highlands for a second honeymoon and to reconnect after WWII. Frank was an intelligence officer during the war and has explained to Claire the "art of lying." Frank and Claire are trying to continue his family tree while he researches one of his ancestors (Jack Randall) with the help of Rev. Reginald Wakefield. One night as Frank returns to their hotel room he spots a Scot staring up at Claire from the street but when Frank approaches the man he vanishes.
Frank and Claire go to Craig na Dun to see the local "witches" dance at the stones. Later that day, Claire returns to the stones for a flower and disappears.
Frank stays in Scotland to search and keep the police searching for his missing wife but he can't help but wonder if she went off with someone else. A couple try to rob Frank by luring him to an alley with a false lead; however, Frank gets the upper hand and has to rein himself in from dark tendencies.
Mrs. Graham tells Frank about her theory of the standing stones but is met with skepticism. Frank decides to return to England but as he passes the stones he stops to call out to Claire in hopes that Mrs. Graham is correct. When Claire doesn't appear, Frank leaves and moves on with his life.
Jack Randall is the british soldier who attacks Claire after stumbling through the standing stones. Later, Jamie tells Claire Randall is also the British officer who raped his sister, though Jamie doesn't know Randall wasn't able to actually commit the deed. When Dougal takes Claire to the Garrison Commander, she is left alone with Randall who attacks her. She is rescued by Dougal who is compelled to return her later and needs to make her a Scot by marriage so prevent Randall from being able to get to her.
Later, Claire tries to return to the stones only to be captured and brought before Randall who is willing to physically abuse and rape her. Jamie comes to her rescue and Randall is excited by the prospect of learning about Jamie and Claire's marriage. When Jamie is captured by the English Randall finds Jamie at Wentworth and brutally rapes and tortures him. In the rescue, Randall is trampled by cows but doesn't die from his injuries.
Jack pops up in France after Alex is fired from his job. Randall is humiliated by King Louis in front of Jamie and Claire. After they are out of the King's presence, Jamie and Randall agree on a duel which Claire thwarts by having Randall thrown into the Bastille.
Jamie goes to Madame Elise's brothel to settle Charles Stuart's debts. Fergus comes along but wanders off falling into the clutches of Jack Randall. Jamie hears Fergus cry out and bursts into the room. Jamie attacks Randall and then challenges him to a duel. Claire arrives to see Randall and Jamie sword fighting. Her trip out to the woods has taken its toll and she crumples to the ground bleeding as the authorities show up and stop the duel, but not before Randall is wounded in a stop that will prevent him from raping again. Later, Claire finds Randall with his brother and Jack pleads with Claire to help Alex. He gives up sensitive intel as payment but in the end Alex isn't going to make it and Jack reluctantly commits to Alex's dying wish of wedding Mary and giving her all Alex can not.
Frank returns to Scotland when he learns his wife has reappeared after three years. Frank and Claire return to the Rev. Wakefield's home after Claire is released from the hospital. Frank is baffled as to why Claire has suddenly taken an interest in Jacobian history and where she got a realistic 18th century costume.
Rev. Wakefield tells him her costume is an authentic 18th century woman's wardrobe. Frank is full of questions and later the same night Claire invites him into her room where she tells him everything that happened and Frank is willing to believe her because he just wants his wife back. Claire tries to tell him she fell in love with another man but Frank is willing to accept this too. Then Claire delivers a final blow and informs Frank she is pregnant. At first, Frank is overjoyed to think they will be parents but it soon dawns on his this child can only be Jamie's. Frank has an instant violent reaction which he keeps in check before fleeing the room.
Frank isn't sure what to do but after talking to Rev. Wakefield, goes upstairs to talk to Claire. Frank wishes to raise the child as theirs but Claire must stop searching history for Jamie. Claire agrees and gives her 18th century clothing to Frank (who later burns it) though she can't bring herself to remove the ring Jamie gave her and Frank relents telling her to take it off when she is ready.
Frank takes a job in Boston to distance them from the newspapers and rumors in England and Scotland.