The Opal Deception

Opal Koboi, who had been under 24-hour surveillance, had DNA tests done every 4 hours, a seeker-sleeper planted in her arm (a device that can make the criminal faint, it also gives his/her position away) and had her in a net trapped with monitoring pads by the LEP to ensure that Opal was actually in the asylum cell, with help from the Brill Brothers manages to replace herself with a clone, which is identical to herself (the only difference being that the clone is brain dead). Opal lures Commander Julius Root and Captain Holly Short of the LEP into a lava chute alone by putting General Scalene under the mesmer there. Koboi then kills Commander Root by using a 30 centimeter metal box packed with explosive gel and covered in stealth ore (framing Captain Holly Short as the murderer by blocking the LEP camera and changing the video to Holly shooting her commander), and launches a bio-bomb at Artemis Fowl, which fails to kill him and his bodyguard Domovoi Butler because Butler jumps from the three story hotel with Artemis.