According to a particular blog site that lists the specific authors for each book in the lassiter series, this first book was written by W.T. Ballard. I think I prefer the ones written by Peter Mccurtin. They just seem to flow better. I couldn't give a decent synopsis for this one based on memory, and I'm not about to skim the pages for the sake of a serviceable review like I normally would.
Whoever did write this at least managed to characterize Lassiter as a solid outlaw anti-hero, which he remained throughout the series. There's no mistaking him for a man of virtue. This is definitely a revenge western, and Lassiter is the one seeking the revenge, in this case for being set up as a fall guy in a bank robbery where a banker was shot and killed. Like I said though, the plot just didn't have that streamlined feel that I look for in westerns like this, with just a few too many subordinate characters. But the characters were at least well done, and the action scenes weren't bad either.
I think I'll look to see if Ballard wrote anymore of the Lassiter books, and maybe just read one more by him. If not, there's at least several more in the series that I haven't read that are likely to be better than this one.