Roland Ford is not a conventional PI. He lives close to San Diego on a small ranch which, in addition to his house, has a half dozen casitas scattered around. He was given that ranch by the parents of his now-dead wife. Five of the casitas are inhabited by a unique collection of folks that he refers to as the 'Irregulars.' He always keeps one vacant because you never know when someone will need it, right now! And Lindsey needs one, right now, though she doesn't realize it at first.
Recently, she has spent some time with an unusual Arabic man. He is very bright, charming, wealthy and just a little scary, maybe because of the Arabian knife with a curved blade that he brandished on one occasion. True, he only used it to cut cheese and fruit but he did that very expertly, like a master of the knife. Lindsey received a very charming note from him asking her forgiveness for his behavior, written in Arabian calligraphy. Shortly thereafter, she receives a very threatening note written in the same type of calligraphy. Could both be from him? What other explanation is there? Does he have multiple personalities? Hmmmmm.
When she was in the Armed Forces, Lindsey was a member of a drone piloting team. Located in the Western US, she piloted drones flying in the Middle East. The two other members of her drone piloting team have also received threatening letters, also written in Arabian calligraphy. Roland's concern over all this drives him to call a hardnosed FBI Special Agent that he has known and worked with - if all FBI agents are Special then it would seem that none of them are. Hmmmph. Anyway... She is a bit skeptical but he convinces her that there is a real danger to Lindsey and the other members of the drone piloting team. Then one of her team members is brutally killed - slashed to death and beheaded.
Parker does his usual solid job of creating a plausible and engaging plot with just enough twists to keep it interesting. He does, however, go a twist too far in my not-too-humble opinion and, because of that, I almost DNFed the book but I persevered and am glad that I did. His brief dalliance from believability was not enough to wipe out the value and enjoyment of completing the book. Swift Vengeance is written in a straightforward style that I enjoy reading. His characters are generally believable, interesting, pretty well-developed and fun to read about.
I would give Parker a low four-star rating because of his failure to be believable in one very important sequence. Nonetheless, I enjoyed the book enough to recommend it to other Goodreads folks but you may want to read the first Roland Ford book before this one. It's not critical but it may be a good idea.
Finito