Unfortunately, blood biography combined with magical checkins and a spell-based binary search (probably using spirit planchets and generations of "retired" agents as spirits) to locate bodies spells doom rather cheaply as government spending goes.
Blood bio, cast with a drop of a ctreature's blood, gives answers to:
Who are you? (The name by which the creature is most commonly known)
What are you? (Gender, race, profession/role)
How was your blood shed? (Brief outline of the events that caused its wound, to the best of the victim's knowledge)
When was your blood shed?
Finding the corpse will have blood in its wounds, which then provides a "brief outline of events." It is reasonable to assume that a brief outline will discuss the method of attackers. Which then, (papers please!) will link them to the last internal checkpoint by their class descriptions or other characteristics linked to their identities.
To be clear though, the public side of things will be absolute silence. Because the public doesn't know about this appearance of weakness, there will be no advertising the weakness. (Otherwise people get the idea that harming the secret police is possible, and we just don't want that...) Reprisals are fine and all, but an aura of omnipotence is better. If the team missed any of its checkins or procedures, their supervisor (to the function of his ability to have fall-guys) will be tortured to encourage the others. If there are some rumors, some of the "usual suspects" will be rounded up and executed for a trumped up charge.
In terms of team notification, every team will, being lawful, likely follow "modernish" police practice of "check in with home base." The logistics of this vary, depending on infrastructure.
- Visible tech: A napoleonic semaphore is not out of the question, especially with items of "whispering wind." (Given how cheap this makes individual messages, combined with the efficiency gains from modern communications and the ability to spy on the communications of a populace, I see no reason why a lawful evil society wouldn't have one of these networks.)
- A wizard did it: Telepathic Bond may be made permanent. Every squad of agents should be placed in telepathic bond with their controller "back at base". Given the communications capabilities that this implies, it's the cheapest possible communications network. An "empire" (evil or not) lives and falls on its communications, which means that there should be a correspondingly high priority assigned to this. We can assert, however, that the idea of battle-ready flying squads ready to teleport to help requests may not be part of the repertoire, likely due to infighting and other politics. Still, even presuming that these aren't "always on" (maybe the controller is managing multiple squads) squads should check in when before they expect trouble and after they're clear.
The players get one missed checkin as a grace period, Then a "ministry of divination" (I'm assuming nation-state resources) steps in with a series of spirit planchettes and does a binary search to find the last location of the missing team (as a function of the region that they checked in from). The binary search only needs to be of a region the size that locate object (remember, both a corpse, the corpse's robes, and the identity documents marked with a specific arcane mark are all items) can cover. Happily, the players removed some of the evidence there, but a corpse is still an object.
That binary search takes exactly as long as you wish, as it's a function of the resources invested into the "ministry of divination"'s binary search capabilities and whether or not the "spirits in the area" are favourable to which side. Of course, if I was an lawful evil ministry of divination, I'd make sure that the spirits in the area were particularly well disposed to me: any spiirt that provides a useful answer has their family rewarded with a lowering of quota or other "random" bureaucratic positive outcome. Any spirit that obstructs this will a) have their family harmed, and b) be otherwise removed using normal mid-level adventurer capabilities.
If I was doing this in 3.5, I'd make sure that the communications infrasturcture all had the necrotic cysts implanted in them so that the parent-cyst could scry (and remote take over) any of her agents whenever she desired.
The Features of a type are specifically features of racial hit dice for creatures of that type. Since the alienist (presumably) has no racial hit dice, none of those apply.
So that means no change in HP, BAB, or skill points.
The Traits, on the other hand, do, so the alienist gets all of those (and loses the Traits of his or her previous type).
Moreover, despite the definition of Outsider (native), you only get the native subtype if the thing says you get it, and alienist doesn’t (because you have become so alien that you no longer count as native).
So that means darkvision, simple and martial weapon proficiency, and yes, both difficulties being resurrected and no need to eat or sleep.
Best Answer
The description for Resurrection includes "You can resurrect someone killed by a death effect or someone who has been turned into an undead creature and then destroyed." (emphasis mine) That indicates to me that a) you cannot resurrect someone who has been turned undead until that undead creature has been destroyed and b) that it is possible to resurrect them once that has happened. This phrase is repeated verbatim on True Resurrection, so I'd say that no, this is not possible on a strict reading of the rules. Well, not without time travel, at any rate...