Not Till We Are Lost

The 5th installment of the Bobiverse is a total banger!

With the threat of the Others behind them, there are new risks and challenges coming from every direction, even from within the Bob like itself. One set of Bobs discovers a wormhole network that leads them to discover an existential threat so large that it literally changes everything. Meanwhile replicative drift causes the Skippies to go off on their own and they create a new enemy from within that is a threat of almost the same level.

Hard not to give spoilers by going any further. Let's just say that if you're a fan of the Bobiverse books, it's unlikely you'll be disappointed in book 5. I enjoyed it more than Heaven's River.