Books like Cocaine Blues by Kerry Greenwood

Two young lovers, Tommy and Tuppence Beresford, form a private detective agency and are hired to locate a missing woman named Jane Finn, whose disappearance threatens post‑war Britain.

http://en.wikipedia.org/wiki/Day_of_the_Jackal

Amelia Peabody, a thirty‑one‑year‑old Victorian gentlewoman and renowned Egyptologist, travels to Cairo with a troubled companion to pursue her passion, only to uncover a murder plot and a mysterious, homicidal mummy.

In the exclusive Spanish resort Estrella de Mar, a housefire kills five. Club manager Frank Prentice confesses murder, but the police doubt him; his brother Charles uncovers a hidden world of crime, drugs and illicit sex.

Phryne Fisher returns aboard the SS Hinemoa, where a series of jewel thefts on a luxury New Zealand cruise forces the elegant detective to unravel a ring of thieves amid shipboard intrigue.

Mary Russell, a young detective in the post‑World War I era, partners with Sherlock Holmes to uncover the sinister underpinnings of a feminist‑Christian sect known as the New Temple of God.

Phryne Fisher boards a Ballarat train only to discover a sinister poisoning plot that threatens passengers, forcing her to investigate amnesia, missing rings, and rumors of black magic.

Mary Russell and Sherlock Holmes travel incognito to India, searching for a missing spy who inspired Rudyard Kipling’s "Kim" and uncovering dangerous intrigue.

Phryne Fisher returns to her famous sleuthing in the bustling funfair of Luna Park, only to uncover a mummified corpse and a cursed gold mystery that leads her to the rugged town of Castlemaine, where danger and intrigue await her.

Phryne Fisher returns to a Gothic mansion in the Victorian mountains, where a strangled maid, death threats and mysterious funeral urns lure her into a dangerous investigation.

In the 1928 St Kilda Flower Parade, Phryne Fisher is chosen Queen of the Flowers, but a beach murder forces her to abandon the carnival and become a detective in her own stylish, spirited mystery.

Amelia Peabody returns to 1903 Egypt for her ninth adventure, where a warning against the Valley of the Kings, a fraudulent spiritualist, and a shocking murder threaten her family’s cutting‑edge discoveries.

"I very much need to be dead." These are the chilling last words left by a man who had everything to live for but took his own life. In the void that remains stands his widow, FBI agent Jane Hawk, surrounded by questions destined to go unanswered unless she does what all the grief and fury inside her demand: Find the truth, no matter what. People of talent and accomplishment, people seemingly happy and sound of mind, have recently been committing suicide in surprising numbers. A disturbing pattern is beginning to emerge. Jane is determined to give up everything to find out why. And if that means going rogue and becoming America's Most Wanted, then so be it. Those arrayed against her are legion, and devoted to protecting something profoundly important-or terrifying-enough to exterminate any and all in their way. But Jane is as clever as these enemies are cold-blooded, as relentless as they are ruthless. And she is driven by a righteous rage they can never comprehend. Because it is born of love.

A curious murder in an Egyptian shop sparks Amelia Peabody and her husband Radcliffe Emerson into a perilous excavation that uncovers a lost mummy case, ancient conspiracies, and danger beyond mere curses.

Samurai Matsuyama Kaze races through 17th‑century Edo to rescue a lord’s missing daughter trafficked into child prostitution, all while a manhunt targets him as the shogun’s would‑be assassin.

In London’s affluent Paragon Walk, a brutal rape‑murder turns a community of aristocrats into suspects, and Charlotte Pitt’s link to a resident forces her to ask the questions no one else will.

In Edith Pargeter's historical mystery, Brother Cadfael investigates a former mentor’s alleged heresy, probing the boundaries of faith and inquiry in medieval England.

When an explosion kills wealthy industrialist Gregory Van Dyke, Detective Frank Malloy is dispatched to investigate an anarchist plot. He must work with his estranged love, midwife Sarah Brandt, as they chase a dangerous killer in 1930s New York.

Thomas Pitt, a Special Branch operative, is called to investigate a murder at Connaught Square, where a junior diplomat's body lies in a wheelbarrow. Suspicion falls on the house’s Egyptian tenant, Ayesha Zakhari, as political intrigue and a looming trial threaten to expose hidden scandals.