A Cooper and White Mystery Books in Order
Part ofJulia Derek Books in OrderFollow A Cooper and White Mystery books by Julia Derek in order, with summaries, detective-series background, and the best place to begin.
Last updated: July 15, 2026
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A Cooper and White Mystery books in publication order
5 books
Sins of the Past
by Julia Derek
2016
After Kate Martinez's husband is stabbed in Central Park, Detectives Cooper and White uncover the gang ties he kept hidden. His past leaves Kate and her children exposed to a danger that is not finished.
A Criminal Mind
by Julia Derek
2017
When Rose Nichols's husband Mark is shot to death, the case exposes a web of motives and suspicion. Detectives Cooper and White must find the killer before grief and deception bury the evidence.
Deadly Dreams
by Julia Derek
2017
A woman begins to fear she may have killed someone while asleep. Detectives Cooper and White must separate nightmare from evidence before a frightening possibility becomes a deadly reality.
Girl With a Secret
by Julia Derek
2017
A secret held by one woman may put a man's life in danger. Detectives Cooper and White follow a case where hidden history and personal loyalty make the truth difficult to uncover.
Mortal Sin
by Julia Derek
2017
The strangling of wealthy lawyer Martha Moran leaves Cooper and White with a difficult investigation. Her privileged world contains secrets, resentments, and people with reasons to want her silenced.
A Cooper and White Mystery books in chronological order

Sins of the Past
by Julia Derek
2016A Cooper and White Mystery, Book 1
Deadly Dreams
by Julia Derek
2017A Cooper and White Mystery, Book 2
Girl With a Secret
by Julia Derek
2017A Cooper and White Mystery, Book 3
A Criminal Mind
by Julia Derek
2017A Cooper and White Mystery, Book 4
Mortal Sin
by Julia Derek
2017A Cooper and White Mystery, Book 5
Series background & context
A Cooper and White Mystery follows New York detectives Wilhelmina Cooper and Larry White as they investigate murders with roots in old secrets, family damage, and dangerous loyalties. The books are police procedurals, but the cases are never just about a body and a clue. Each investigation pulls apart a life that looked ordinary from the outside.
The first book, Sins of the Past, begins when stay-at-home mother Kate Martinez loses her husband Diego in a stabbing at Central Park. What seems like a robbery gone wrong leads Cooper and White toward Diego's hidden ties to gangs, rivalries, and a past he tried to leave behind. Kate's grief becomes tangled up with revelations about the man she thought she knew.
That mix of personal loss and buried history carries through the series. Deadly Dreams asks what happens when a woman fears she may have killed someone in her sleep. Girl With a Secret centers on a secret that could put a man's life at risk. A Criminal Mind begins with a woman whose husband has been shot, while Mortal Sin opens with the murder of a wealthy lawyer.
Cooper and White provide the continuing link. They are working detectives, following evidence and interviewing suspects, but they also have to deal with witnesses and victims whose stories are shaped by fear, shame, and self-protection. New York City gives the series its busy, pressured backdrop, from private homes and public parks to neighborhoods marked by old conflicts.
The tone is serious and fast-moving. These are crime stories with murder investigations at the center, along with domestic drama and questions about how long the past can stay buried. Readers who enjoy cases that begin with a simple explanation and become more complicated should find a lot to like here.
Start with Sins of the Past. The later books feature new central cases, but the detectives' partnership and the overall rhythm are best established from the beginning.
The series keeps returning to one idea: people can change their lives, but the secrets they leave behind may still come looking for them.
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