In the words of Ike Eisenhower, let's get biz-zay
Notably, the cover of this issue doesn't have a title at all. Combine that with the cover image - every page of issues 1-11 in order, with an image of Elijah Snow superimposed above, and it's signalling that this issue is deconstructing Planetary itself, and Snow in particular.
And the issue gets right down to business. It's worth noting that in a way this is part 3, or maybe even part 4 of a story that's taken up most of book 2. Snow left Four Voyagers Plaza at the end of issue 10, contacted John Stone, met up with him, and returned to Planetary. This issue is the first time Jakita and Drums have seen Snow since he went to Four Voyagers Plaza, and it's the first time the three of them have been together since the end of issue 8
And Snow is all business here. A sharp word is enough to get Jakita and Drums to acquiesce to his orders, once they realise how serious he is. Their relationship changes forever in the 4th and 5th panels of page 1. Though it takes them a few more pages to realise it.
And at the same time, the line "I know I can't slap you around. I know I can slap him around" shows that he knows the physical limits of his relationship with Jakita, even though he's clearly in charge again.
But the issue's first big reveal is that the Planetary Guide is a book that's been published Underground since 1925, written by Snow. We start to get a feel for the true age of the organisation and learn immediately that Snow was involved in the past.
In a continuity moment, we get a reference to gunning down eggs of alien organic war-automata in Judgement, Rhode Island in January 1931 - this is, of course the first flashback in Planetary/Authority: Ruling the World.
The second revelation is that Snow knew Sherlock Holmes, and he learned how to be a detective from the legendary figure. Oh, and he knows who the Fourth Man is.
And this is Snow's tactic - he gains knowledge, and he uses it as a weapon. He times his revelation to keep Jakita and Drums off-balance. Right after telling them he leaves the building, forcing them to follow to discover what he knows.
And right in the middle of this, he's also thinking and figuring things out - like why was Jim Wilder investigating the destruction of the Hark building, if Anna Hark also has John Stone on the payroll? If, as Snow postulates, Hark knew the plinth was under there, then she wanted to turn Wilder into a superhuman.
But as a counterpoint to all that, we discover that Snow doesn't remember Ambrose, and as soon as that block falls away, He realises that Ambrose hasn't been around the whole year or more he's been back at Planetary - and he misses him.
What's also interesting here is the stabilisation of Snow's relationship with Jakita and Drums - Drums is back to being snarky, but not mean, while Jakita is able to get angry with Snow, even though he's clearly in charge again.
And we come to the halfway point of the story. The first book set up the world Planetary inhabits, ending with the introduction of The Four. The second gave us a sketch of The Four - we learn of their general operations in issues 8-10, we learn that they saw Planetary as an amusement until Snow got too good at beating them in 11 and 12. But we also learned a lot about Planetary. And if you remember my writeup of issue 7 I said that it doesn't fit the rest of this volume tonally. The moment where Jakita looks at Snow sadly - explained here is the only thing that really links the story to the overreaching arc, it's the only story in book that doesn't mention The Four at all. As individual volumes, would Planetary book 2 have been a stronger story if issues 6 and 7 were swapped around? And then, would book 1 have been diminished by not having that cliffhanger moment?
In issues 11 and 12 we see a lot of flashbacks. All the ones involving Snow and a member of Planetary have been explained now. But there's a few that deserve more examination. And as Snow says - the game's afoot, so how these moments interact with the the battle against the Four remains to be seen.