Reliquary by Douglas Preston and Lincoln child. Suspense. Enjoying it so far. It's the sequel to The Relic, and I'm liking this book a bit more than the first.
HisBane
I enjoyed that trilogy, too.
I lived in MKE for 16 years. Keep the water softener, lol.
The Goonies and Pump Up the Volume followed closely by Indiana Jones (1&3) and Scott Pilgrim vs. The World.
Just finished the City of Ghosts, Tunnel of Bones, and Bridge of souls trilogy from VE Schwab. They're YA fantasy set in modern times, the protagonist being a 12-year-old girl who's best friend is a ghost. Light and easy reading, and a nice fit for younger audiences.
I've been working through Schwab's works after reading The Invisible Life of Addie LaRue, which is also fantasy, but definitely for older audiences. The chapters alternate in both time and characters, and there are enough twists in the story to avoid predictability.
Currently reading "The Kaiju Preservation Society" by John Scalzi. Lightweight, humorous sci-fi. Just recently finished "The Gentleman of Moscow" by Amor Towles, which is lovely storytelling if you enjoy character building. KPS is definitely a much different feel.
Depending on what you like to read, I would recommend both - but for different reasons.
Might not be quite "hard" enough, but perhaps try the Interdepency trilogy by John Scalzi.