Books like Doctor Who by Paul Erickson

She's got ice in her heart and a kiss on her lips... 1939, New York. Private Eye, Melody Malone, is hired to find a stolen ruby, the Eye of Horus. The ruby might hold the secret to the location of Cleopatra's tomb - but everyone who comes into contact with it dies. Can Melody escape the ruby's curse? 1939, New York. River Song, author of the Melody Malone Mysteries, is forced to find a reality-altering weapon, the Eye of Horus - but everyone who comes into contact with it dies. River doesn't believe in curses - but is she wrong? From the top-security confines of Stormcage to the barbarism of first-century Egypt, River battles to find the Eye of Horus before its powers are used to transform the universe. To succeed, she must team up with a most unlikely ally - her own fictional alter ego, Melody. And together they must solve another mystery: Is fiction changing into fact - or is fact changing into fiction?

In the early 22nd century, humanity's brief interstellar encounters reveal vast alien threats. The Eighth Doctor and his companions must rally a wounded world and confront these unstoppable forces before calamity strikes again.

In 1865 China, the Doctor and his companions confront banditry, rebellion, and foreign oppression while dealing with a legacy of vengeance and the Ten Tigers of Canton, a clash of old martial arts mastery against modern challenges.