I'm a big fan of romantic suspense so when I read this synopsis, I was all in. There are many attractive elements to this book, ex-Navy seals (yum), a sunken treasure, and bad guys that threaten national security and more. 
 Leo agrees to help CIA agent Olivia because he has a great sense of honor and even though he's no longer a Seal, he still has the love of his country. It doesn't hurt that he's been pining away for her for the last year after they shared a kiss on a previous mission. So when she asks for his help, he finds it very hard to say no. 
 The mission is complicated by a traitor in the CIA and another group of men looking for the missing cannisters on the sea floor. I did enjoy the action scenes when the men had to really take care of business, although I thought it was a bit unrealistic that they come out of some of the skirmishes without a scratch, but hey, they are Navy Seals, right? 
 There was a lot of potential in this story and I was really eager to dive into this one. But there were too many POVs from the various players early in the story that made it difficult for me to get into the story early on. There were too many other characters to get to know and the focus strayed off Olivia and Leo enough that it impacted my reading experience. 
 I did like the story and thought it had a nice complexity to it and it was the reason I kept reading past the first thirty percent. Things did pick up when the action started. There's even a nice preview of what I'm guessing is an upcoming romantic pairing in a future book in the series. 
 So overall, enjoyed the story, but would have liked to have the writing a little bit more focused at the beginning.