His highborn mother is the daughter of an aristocratic family, his father a poor Jew. Their marriage flouts tradition, makes them social pariahs in the London of the 1860s; and son Sherlock bears the burden of their rebellion. Friendless, bullied at school, he belongs nowhere and has only his wits to help him make his way.But what wits he has! His keen powers of observation are already apparent, though he is still a boy. He loves to amuse himself by constructing histories from the smallest detail for everyone he meets. Partly for fun, he focuses his attention on a sensational murder to see if he can solve it. But his game turns deadly serious when he finds himself the accused, and in London, they hang boys of thirteen.

    Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher—a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond all imagining. By the present day, however, the puzzle has never been solved, and the greatest mystery of the modern world is little more than a tourist attraction.Tess and Theo Biedermann and their friend Jaime Cruz live in a Morningstarr apartment house—until a real estate developer announces that the city has agreed to sell him the five remaining Morningstarr buildings. Their likely destruction means the end of a dream long-held by the people of New York. And if Tess, Theo and Jaime want to save their home, they have to prove that the Old York Cipher is real. Which means they have to solve it.

    Moundshroud. As Pipkin scrambles to join them, he is swept away by a dark Something, and Moundshroud leads the boys on the tail of a kite through time and space to search the past for their friend and the meaning of Halloween.

    Things get even more interesting when the royal prince and princess board for the last leg of the journey--because the princess's diamond necklace is soon stolen and replaced with a fake! Suspicion falls on the one person who isn't supposed to be there: Lenny.It's up to Hal, his keen observation, and his skill as a budding sketch artist to uncover the real jewel thief, clear his friend's name, and return the diamond necklace before The Highland Falcon makes its last stop.

    If her Aunt Kate rejects her, it's the miserable Home for the Friendless.Luckily, canny Nell makes herself indispensable to Aunt Kate...and not just by helping out with household chores. For Aunt Kate is the first-ever female detective employed by the legendary Pinkerton Detective Agency. And Nell has a knack for the kind of close listening and bold action that made Pinkerton detectives famous in Civil War-era America. With huge, nation-changing events simmering in the background, Nell uses skills new and old to uncover truths about her past and solve mysteries in the present.Based on the extraordinary true story of Kate Warne, this fast-paced adventure recounts feats of daring and danger...including saving the life of Abraham Lincoln!

    A long short story featuring Penn and Tom Cage that fills in a critical period in their past, one that helps to set up the action in the coming trilogy, Natchez Burning, The Bone Tree and Unwritten Laws.