Alarm, Sarge! Robot Extreme Alarm! Whereabouts? Library Park Gardens. Nearest Patrol? Other side of town. Calling all units in the vicinity of Library Gardens! Ruffa and Lawrence here, Sarge. Didn't know you were on duty. We're not - but were very close to Library Park. Thank you. Please investigate cause of Alarm. [(Message flashes up on screen) "Krill unit landed from Robotika Repairs 10 minutes ago"] Base. Yes? Ruffa here. Severely damaged Krill, civilian clothes, rapidly losing power; babbling about books, making no sense; looks like phaser damage. We have transport; will bring Krill unit in. [Later] Looks bad to me. Have you gathered any other information, Ruffa? Unfortunately power failed totally on way here. Unit mentioned Robotika and holiday. Was collected and taken to travel facility by Krill trooper. Commissioner is on his way. Doesn't make sense, Ruffa. The Library Krill was missing Monday but returned the next morning. Your Krill here would appear to be the librarian. So the Krill sent to Robotika was this one - not the one Chomper took from the store for despatch and examination. Where's that one now? And which Krill Trooper sent this librarian instead of Chomper's? And since the librarian has only just returned - who has been impersonating him at the Library? Our "Rogue Trooper" then. Which leaves us with him and two other Troopers to find, and then the one Chomper collected. What we need is a Krill detector. Which in our case we have not got. Signal coming in, Sarge. Action near the portal. Soldiers guarding it have fought off an attack by two agents. Two soldiers down and one of the attackers. The other attacker appears to have left the scene. Attacking agent Krill dressed as Trooper. Used banned Disruptor weapon. Sending you two troopers to gather full details. Ruffa, Lawrence - off you go. Sounds like there are only two Rogues to catch now. Draw arms from Store if you think it necessary. Constable - notify Special Security that we need to initiate searches for these two and also one (probably kidnapped) krill. And get hold of that Chomper; we need to find out if he knows anything at all that will help. At once, Sarge.