
If you are arriving cold: Bob Johansson sold his software company, got hit by a car, and woke up more than a century later as the operating consciousness of a self replicating interstellar probe owned by a state that no longer considered him a person. He copied himself. The copies copied themselves. Five books later there are a great many Bobs, none of them quite the same, spread across a good deal of the galaxy.
Taylor has said what this one is for, and he has not gone small. Who built the wormhole network, and what they wanted it for. Whether faster than light travel can actually be made to work. And a supermassive black hole on a course that would take the Milky Way with it. There is also a derelict alien ship to get inside, refugees who need somewhere to be, and old enemies who have not gone anywhere.
It arrives on the tenth anniversary of the first book, almost to the day, as an Audible Original, with Ray Porter once again voicing every Bob in it. A seventh book has already been announced.

Two facts settle most of this for anyone already in the series. It is eight hours and twenty two minutes, which is compact for a Bobiverse entry carrying questions this large. And book seven is already on the way, so whatever this one does with the wormhole builders and the black hole, it is not closing the account.
Ray Porter is the reason this series works in audio and everyone involved knows it. Dozens of Bobs who are all technically the same person and audibly not, an in joke rate that would sink a lesser narrator, and ten years of consistency across six entries. Audible put him in their Narrator Hall of Fame this year, which is about as close to official as that gets. The flip side of the arrangement is worth stating plainly: this is an Audible Original, so there is no alternative edition and no other narrator anywhere. You take it in this form or not at all.
The scope Taylor lays out is the largest the series has attempted, which makes the runtime the interesting number. Eight and a half hours to open the wormhole network, crack a faster than light drive and deal with a galaxy killing black hole is a lot of load on a small frame. With a seventh book announced, my read is that this is the first half of a move rather than the whole of one, and that the questions get opened here and answered later. That is an inference from the shape of it, not something the publisher has said.
On reception I have nothing to give you, and I would rather say so than pad it. It came out today, and being Audible exclusive it had no earlier release gathering opinions ahead of the audio, so there is no aggregate score and no body of listener reviews to summarize. What is knowable is the track record: five previous entries, a following that has stayed put for a decade, and an author who has been reliable about landing the ideas he sets up. Come back in a fortnight if you want a verdict from people who have finished it.
For everyone else, the practical advice is the usual one with this series. Do not start here. We Are Legion is where Bob wakes up and where you find out within twenty minutes whether the voice is for you, because the humour is the whole personality and it does not change later. If you are returning after a gap, Not Till We Are Lost is the one immediately behind this and worth a refresher before you start.
The Infinite Extent, by Dennis E. Taylor is the sixth Bobiverse, and it goes after the big ones: the builders of the wormhole network, the problem of travelling faster than light, and a supermassive black hole aimed at everything. Plus a derelict alien ship, refugees with nowhere to go, and enemies from earlier books who have not improved.
You can start it on a free trial, cancellable whenever you like. Read by Ray Porter, who has voiced every Bob since 2016, it runs 8 hours and 22 minutes and landed on the series' tenth anniversary.
Cancel the trial and The Infinite Extent stays yours. The trial opens the rest of the catalogue too, the five earlier Bobiverse books included. A seventh is already coming. Press play.