Mystery writer Grace McCabe's sister moonlighted as a call girl with Fantasy, Inc., a popular Washington D.C. phone sex "hotline," until she was murdered by a sadistic client. While Grace tries to bait the killer with her similar voice, police officer Ed Jackson struggles to protect Grace and control his growing love for her.

"Lupton enters the highly charged ring where the best psychological detective writers spar... Like Kate Atkinson, Patricia Highsmith and Ruth Rendell… Both tear-jerking and spine-tingling, Sister provides an adrenaline rush that could cause a chill on the sunniest afternoon." —The New York Times Book Review
 
When her mom calls to tell her that Tess, her younger sister, is missing,

...

Dexter leads a charmed existence in London, with money, looks, and girlfriends galore. Life's fantastic... until Dex's sister dies and his world changes overnight. Astonishing everyone, including himself, Dex leaves the city behind, takes charge of his eight-month-old niece Delphi, moves to a beautiful Cotswolds village, and sets about working on his parenting skills. His neighbors, including cartoonist Molly, seem friendly enough. But Dex can't shake...

Although distraught, Happi is also unsettled by the way people have idealized the memory of her sister who was killed after attending a social justice rally -- why do people have to be perfect in order to be missed? As a way to honor the memory, however, Happi and her other sister Genny go on a roadtrip using the original "Green Book" -- but the trip reveals secrets neither sister knew about the dead Kezi.

Alma DeGeer Dunahew, the mother of three young boys, works as the maid for a prominent citizen and his family in West Table, Missouri. Her husband is mostly absent, and in 1929, her scandalous, beloved younger sister is one of the forty-two killed in an explosion at the local dance hall. Who is to blame? Mobsters from St. Louis? The embittered local Gypsies? The preacher who railed against the loose morals of the waltzing couples? Or could it have...

When her sister is found dead under mysterious circumstances, Lena strikes a gruesome deal with the Norse gods to bring her back and finds herself in the middle of an impending doomsday.