" Wow! What a book! The character is incredibly well-developed. The pulse-pounding plot has thrilling twists and turns that make it impossible to put down. When I completed this book, I had to immediately buy the second in the series. An excellent read!" -Five-star Goodreads review. Profiler Sarah Armstrong knows what it’s like to be in a sticky situation. But when megawealthy businessman Edward Lucas III is found murdered along with his mistress, their bodies posed in grotesque ways, Sarah quickly senses that this will be the deadliest case of her career. While others focus on Lucas’s estranged wife, Sarah hunts a suspect only she believes in. Yet nothing in her career prepared her for the horror of a young man who believes he has been sent from heaven to massacre innocent people. When Sarah picks up the killer’s elusive trail, the psychopath sets his sights on all she holds dear. Filled with pulse-pounding action, Singularity features a feisty, funny, and tough heroine and a truly creepy killer, as it races along to a chilling and unexpected climax. BOOKLIST picked SINGULARITY, as one of the Best Crime Novel Debuts of 2009! An incredible honor! Vanity Fair , SINGULARITY is a recommended read in the magazine's HOT TYPE section! "Lt. Sarah Armstrong balances the challenges of being the Texas Rangers' lone criminal profiler and a single mom in the riveting fiction debut from true-crime journalist Casey ( A Descent into Hell ).... Casey's solid research, smooth plotting and sensitive depiction of Sarah's relationship with her grieving daughter lift what could've been standard serial-killer fare into poignant, exciting family drama." Publisher's Weekly , a starred review, PW's highest designation! "An impressive fiction debut for true crime author Casey (She Wanted It All, 2005), whose memorable heroine has brains, moxie, and heart. Happily for readers, this is the first in a series," wrote Allison Block for Booklist. (SINGULARITY was given a star, indicating it is "outstanding in its genre.") "Casey is clearly talented and has the makings of a robust and long-lasting series character," the Baltimore Sun "Not since Patricia Cornwell's 'Postmortem' has a crime author crafted such a stellar series debut. Kathryn Casey hits the right notes in her first novel, 'Singularity,' a thriller with an insider's insight into the minds of psychopaths...think of [Sarah] Armstrong as a blending of Alex Cross and Kay Scarpetta, a tough cookie balancing her new role as a widow. Casey finds sympathy and strength in the female Texas Ranger as she struggles with sexism and politics at the heart of this crime," the Tampa Tribune "The nuts-and-bolts of profiling -- looking for patterns, digging for similar murders, identifying the signs of pleasure killing -- is given gratifying play: The two profilers' probing of a small community in the Big Thicket with a long-ago matching murder is compelling. The string of murders that later unfold is also vivid, with the victims given poignant depth... Casey keeps a steady momentum building to the end," the Houston Chronicle "Casey has a deft touch with dialogue and character development," the Cleveland Plain Dealer "There's a new Ranger in town and she's profiler Sarah Armstrong...Let's hope she'll be around for a good long while...a harrowing debut," says C.J. Box , author of BLUE HEAVEN and BLOOD TRAIL Deadly Pleasures magazine ranks SINGULARITY as one of the Best First Novels of 2008! "SINGULARITY starts on a high note and never lets up. Kudos to Kathryn Casey for her creation of Sarah Armstrong, a complex and memorable character sure to appeal to all readers. SINGULARITY is a bright new star in the mystery genre," says Jessica Speart , author of UNSAFE HARBOR, RESTLESS WATER, AND BORDER PREY "Speaking as a former cop, I'd work a case with Texas Ranger Sarah Armstrong any day. She's a smart and savvy investigator, definitely a force to be reckoned with. More importantly, Casey delivers a strong and chilling novel, proving that she can write fiction with the same compelling authority in which she pens true crime," Robin Burcell , author of COLD CASE, FATAL TRUTH and DEADLY LEGACY A novelist and an award-winning journalist, Kathryn Casey is the creator of the Sarah Armstrong mystery series and the author of eleven highly acclaimed true crime books. Her first novel, SINGULARITY, was one of Booklist's best crime novel debuts of 2009, and Library Journal chose the third, THE KILLING STORM, as one of the best mysteries of 2010. She's a frequent television and radio commentator and has appeared on 20/20, Oprah, Oprah Winfrey's Oxygen Network, Court TV, Biography, Nancy Grace, E! Network, TruTv, Investigation Discovery, The Travel Channel and A&E.