This is the final book in the TCD minis-series and I have to admit that after Midnight Abduction above, I was tempted to give it a miss. The only thing that made me keep going was the promise I made to the publisher to give them some feedback.

I’m glad I did though as the series really picked up and ended on a high. This time the story follows Jace and Laura to a small southern town where there have been a series of murders surrounding Stroud Pharacuticals. First poison and then bombs, this seems to be a case where both everyone and no one has a motive. The usual action, drama and romance you expect from Harlequin has be paired with good writing and a pretty good story. A good fun read for anyone who likes this kind of quick chick lit romance genre.

Two TCD agents go undercover to investigate who tainted over the counter medication at a pharmaceutical company in Tennessee. Soon after Jace Cantrell and Laura Smith pose as a newly married couple applying for jobs, bombs are placed, upping the ante for the investigation.

Laura is the agent that prefers to follow the rules and get all the data first, while Jace is known as the agent that can wiggle around the rules a bit. Of course, they clash, and of course, that means there's an attraction between them as they go undercover. The fake marriage trope is well played here, complete with sharing a bathroom, cooking for each other, and driving to work together. This novel plays off small-town life and the secrets that the company owners and staffers keep. It was hard enough to investigate how some of the bottles of medication were tainted with ricin, but then the bombings begin, adding another layer to the investigation.

I really enjoyed this one, not just for the romantic tension, but for the multi-pronged investigation. I felt just as invested in that aspect of the story, and my guesses as to who did it was a little bit off. My guesses followed the TCD's investigation track, so at least I made the same connections they did! All of the characters have their own motivations and secrets, which made them more than one-dimensional caricatures. I appreciated that because it really felt as though there were consequences to the choices that the agents made within the community, and not just for their relationships.

Laura "Smitty" Smith and Jace Cantrell go undercover as a married couple in order to investigate Stroud Pharmaceuticals. Apparently, product tampering has taken place at the pharmaceutical company and this has resulted in several deaths. The local police was only too happy to turn the case over to the FBI, so the Tactical Crime Division (TCD) prepare a cover for Smitty and Jace.

Due to the fact that the business is run by a tight-knit family, Smitty and Jace have to tread carefully. The director of the TCD feels that someone at the company is knowledgeable about the truth. The deeper Jace and Smitty dig to find out the truth, the closer to danger they become. This works in their favor, however, because the last thing they want to do is to raise suspicion as to why they both suddenly took jobs at the company. Even with their strong cover, danger quickly is on their tails. It is hoped that Smitty and Jace can stay one step ahead of the culprits and get to the bottom of things before any more deaths occur.

Running Out of Time is the fourth and final book in the Tactical Crime Division series. This story, with a romantic element taking second place to intrigue and danger, is an excellent addition to a thrilling series. Whether or not Jace and Smitty have a future together depends on if they can stay alive.

What a wonderful and fitting end to this series. In this book I enjoyed Smitty and Jace and the sparks that flew, as with all the couples in the series. What this book and the others did was to create exceptionally realistic and dangerous stories that were riveting and impossible to put down.

Many thanks to Harlequin Intrigue and to NetGalley for this ARC for review. This is my honest opinion.