"They don't have Yeerks, it's just me," says Dave. "I don't really want you to kidnap my wife and kids." He sits up, looks around.

"We will certainly not do it if you do not prefer it, leaving them be is the path of least suspicion for us. You are in an underground base in a location we are not going to disclose. Do you have any other questions before we move on with questioning Osset?" 

Dave shakes his head. He's still pretty bummed and wants to go home but he's not going to actually try to help Osset resist interrogation under these circumstances. Osset is thinking that maybe if he hadn't made Dave miss Maddy's birthday party they would be having a different conversation, but, oh well, hindsight.

Leareth repeats his previous question to Osset about his background. 

"I was born on Earth and got Dave when my manager picked me for the infrastructure push project and gave me to the VA dentist."

"Tell us about this infrastructure push project." 

"It involves a lot of infrastructure," says Osset obstinately.

Leareth cannot blame him at all for handling that way but it's very irritating, though he and Nayoki will continue getting as much as they can from thoughts as well. "As a VA dentist, what role were you serving in aiding the Yeerk takeover." 

"I'm not a dentist," says Osset. The dentist put him in Dave, who goes to the VA for his dental work. "Oh for fuck's sake," says Dave, "he's working on building Pools, is that what you want to know."

"Yes, thank you. How many pools are you aware of, and where are they." 

"Three. D.C.," grumbles Osset. And three more in progress but it looks like he doesn't have to say that. "How are you doing this -"

"It does not matter. We have capabilities you were not aware of. How many further pools are in the pipeline to be built, and tell me the exact locations of all of them." 

"Three in progress one more planned and site search underway for two more," says Osset, and he rattles off addresses and in one case latitude and longitude for an in-progress Pool with access a ways out from the city in a park.

They are written down. 

"Tell me a list of all of the other Yeerk activities on Earth that you are aware of." 

Osset doesn't know a lot, it turns out, he almost exclusively knows things about Pools and only the ones in his area that he's working on.

"List the names of all of the other human Controllers you know or know of, and their Yeerks." 

Ha ha there are plenty of people he knows only the Yeerk name for and not the human name and he can leave those out, plus all the Hork-Bajir and Taxxons and Gedds. He lists people.

These are noted as well, and then Leareth patiently, thoroughly, asks him to name all his other Yeerk acquaintances and list anything he in general knows about their humans, if not their names, and then he asks for a list of other species present on Earth with the Yeerks, and any specific individuals he knows, and in general what he knows of their activities and where said activities are located. 

It takes a while. 

This still lets Osset leave out anybody with no host but gets more names out of him. Osset decides to list all of his siblings individually and there are three hundred and fourteen of them; he only has their names memorized because of there being seventy consecutively numbered Ussaks and forty-four Estasses and another twenty-one Ossets. Dave interrupts to say that he's thirsty and also needs the bathroom.

Dave can be shown to a bathroom and given water and a snack, and then they keep going. 

What does Osset know about the Yeerks' resources and ships in space? Does he know of any technology that has been newly invented since the Yeerks came to Earth? 

Osset does not know about that sort of thing because it's not directly related to infrastructure and the Visser's very need-to-know-basis.

What other things does he know about the Visser? Is the Visser the one in command on Earth? 

The Visser's in command on Earth, he's Visser Three, he has an Andalite host and it looks really comfy (Dave snaps that if Osset doesn't like his bad knee he has his pick of which ear to leave through), he seems... good at promoting competent people? Osset has not met him on an individual basis.

Leareth asks a couple more questions, but it seems like he's gathered about as much as he's likely to from this particular Yeerk. 

...Who they don't have a way to feed, once he's out of Dave's head. 

He asks Osset how long he has before he would have been due to visit a Yeerk pool again.