Han Solo at Stars' End was published in early 1979. The sequel, Han Solo's Revenge followed in late 1979. Whereas Stars' End ended up a prison break story, this turns into almost a James Bond style adventure/mystery.
It begins with Han and Chewie (and the droids Bollux and Blue Max) operating a movie theater on a desert planet for easy credits. Unbeknownst to them, they've accidentally created a religious experience for the desert natives by showing a documentary of a water world. The scheme ends in a hurry when they try to show a different movie and they're back in space, desperate for cash.
The solution comes in a simple, lucrative smuggling operation. One catch: Han finds out it involves running slaves. Han & Chewie are rogues, but they absolutely refuse to get involved with any slavers. The immediate situation resolved, an angry Han Solo sets out to find the slavers and get the money they still owe him.
To that end, Han runs into one Fiolla of Llord, a beautiful, idealistic and resourceful woman who's also a Corporate Sector Assistant Auditor-General trying to track down the very same slaving ring. Meanwhile Chewie has his hands full dealing with a persistent skip tracer named Spray, who shoves his way onto the Falcon, intending to repossess it once all the shooting stops.
Shootouts on a luxury spaceliner, planet hopping, a bomb on the Millennium Falcon, a high speed swoop bike chase scene five years before the speeder bikes of Return of the Jedi, and an encounter with Gallandro, the deadliest gunslinger in the Corporate Sector, if not the entire Galaxy.
Much like Stars' End, Revenge runs at a rapid clip of action sequences, betrayals and more action sequences. Comic relief is also strong, as Bollux and Blue Max continue to provide their mix of competence and comedy, while Spray becomes an amusing foil for Chewie.
The real standout is Fiolla, one of the first genuinely memorable Expanded Universe female protagonists and love interests for Han. (Jessa from Stars' End counts too, but she's only there at the beginning and end of that story). Resourceful, witty, and occasionally naive in contrast to Han's practical cynicism, she's great. If one were feeling woke, it could be pointed out that she is a non-Caucasian female hero in a Star Wars story from 1979 and it was no big deal because the franchise was always diverse, but that would shatter the narrative.
She's also a genuinely good cop, which makes a strong contrast to the hard edge the Corporate Sector Authority had in the first book. Tyrants like Viceprex Hirken aren't the only employees in the Authority, which adds a nice layer of nuance.
I absolutely recommend Han Solo's Revenge for fast-paced scum and villainy action, adventure and romance.