Fatal Invitation

Detective Kylie Cassidy Series Book 1

Fiction - Crime
Kindle Edition
Reviewed on 11/26/2025
Buy on Amazon

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    Book Review

Reviewed by Rabia Tanveer for Readers' Favorite

Fatal Invitation is the first novel in the Detective Kylie Cassidy Series by S.F. Baumgartner. The story follows Detective Kylie “KC” Cassidy as she tries to find out why young women are being murdered. This new case was supposed to be a significant career breakthrough in Major Crimes, but it quickly became a nightmare. All her leads turn out to be nothing. However, one thing is for sure. Assistant State Attorney Gavin Watkins and his associate, Kozlov, have something to do with the murdered women. Things take a terrifying turn when her witnesses disappear, and strange men start to hunt her. With only a handful of trustworthy people by her side, KC follows her instincts in a race against time to expose a dangerous criminal network. But when she gets too close, she becomes the next target. How can KC survive while also finding justice for the women who lost their lives? Can KC do it all, or will she become one of the victims?

Author S.F. Baumgartner did a fantastic job of creating a character-driven story that had me hooked until the end. No matter how hard I tried, I could not guess what would happen next. KC is a fantastic protagonist and an incredible character to follow. She is determined and flawed, making her a believable character, and I loved rooting for her. It is not your typical crime story, and KC is not your typical heroine. She is calculating, smart, and knows how to get things done, even with danger dogging her every step. I loved the action, the suspense, and the mystery around why young women were being targeted. The descriptions brought the story to life and made sure I was not going anywhere until I reached the end. Fatal Invitation is a brilliant start to the series, and I cannot wait to see what the author has in store for KC in the next novel in the series.

Stephanie Lynn

Fatal Invitation by S.F. Baumgartner takes readers on a wild ride as Detective Kylie “KC” Cassidy hunts down a serial killer. When a trail of bodies points to an insidious scheme, KC quickly finds herself in the middle of a plot that goes much deeper than she first thought. High stakes and surprise twists pull the reader into the story as new clues arise. Will KC solve the case in time, or will the killer prove to be too smart for her? Fans of police dramas and fast-paced crime thrillers are in for a real treat!

Fatal Invitation by S.F. Baumgartner is such a fun read. This plot-focused police procedural thriller is the start of a new series, and I’m looking forward to having more time with these characters. Aunt Mae is one of my favorite characters so far, and between her and Janelle, KC has some great friends in her corner. In a male-dominated field, it was refreshing to find a female main character who is strong while remaining relatable and well-rounded. Her quick wit and snap decisions make her good at her job, but are also just as likely to land her in trouble at times. I loved watching her piece the clues together as new information arose. It’s not often that I find a story that can keep me guessing. Fatal Invitation kept me in suspense for much of the story, and I loved that. The crime’s connection to a popular social media app was also eerily realistic, making the story all the more believable.

Alma Boucher

In Fatal Invitation by S.F. Baumgartner, Sheri comes across a video promoting a modeling side hustle and believes it might be her chance at a brighter future, but instead, it leads to her death. Detective KC Cassidy is assigned to the case, and while she digs for answers about Sheri, a second body is found. Commander Frank Travers of the Orlando Crime Unit arrives at the new scene. Frank’s team was tracking a serial killer who surgically removes organs from young female victims. The killer knew the ins and outs of law enforcement and managed to stay ahead of them. KC receives threats to end her investigation. But she refuses to quit. As KC gets closer to the truth, she becomes the killer’s next target. Will KC manage to stop the killer before time runs out?

Fatal Invitation: Detective Kylie Cassidy Series Book 1 by S.F. Baumgartner was an intriguing and complex read. The storyline was fast-paced and jam-packed with action. The action started at the beginning and never let up. The twists and turns kept me on the edge of my seat, turning the pages as fast as I could. I could not put the book down; I had to know what would happen next. The writing style was engaging, and I soon felt part of KC’s investigation. The characters were authentic and relatable. KC was my favorite; she was a strong woman who would not quit. She finished what she started. The story was brilliantly written and held my attention throughout. I enjoyed reading this book, and it will stay with me for a while.