My discerning sister pointed me to P. J. Tracy's Monkeewrench series a couple of years back, and here we are already at number six in the series. This one is a pretty good entry. As usual, it follows Minneapolis police detectives Magozzi and Roselth, as well as the super-hackers at the Monkeewrench software firm.
Except one of the Monkeewrenchers, Grace, is sailing (platonically) with ex-FBI agent Smith off the Florida coast. She's relaxed her usual paranoia a bit, but to no avail when a couple of assassins board the boat looking to murder Smith. Grace saves him, but they take this as a signal that they might be in a spot of danger.
Meanwhile, up in Minnesota, a bunch of Native American girls have been abducted from their reservation by Minneapolis Somali criminals. This results in an unusually grisly and unsettling murder. Which results in more carnage carried out by a dying ex-Marine. Wot?
So, it kept my interest even though (as seems usual with successful authors in this genre) it seemed padded out to a contractually-obligated 300 pages.
Given the rather obvious involvement of unsavory Somalis, I kept waiting for one of those 24/Designated Survivor twists where the swarthy immigrants were revealed to be mere puppets of right-wing big-business white guys.
No spoilers, though.