"Ripley's Game," Patricia Highsmith

Not quite as engaging as "Talented Mr. Ripley," mostly because Ripley himself has evolved into a sort of god figure who is busy playing with the life of Jonathan Trevanny, the individual who finds himself in the "talented" slot that Ripley occupied in the first book. An ingenious setup that drags out a bit by the end - because of Trevanny's circumstances, it's pretty clear what's going to happen to him, so the attraction lies in Highsmith's ability to evoke emotional atmosphere (which she does very well, though).

I accidentally skipped the second book in the series, although these aren't the kind of books that you have to read in order after you finish the first one. So back to "Ripley Underground," then onward to "The Boy Who Followed Ripley."