Taking Care of Three Birds With One Bomb
Season 4, Episode 13
Those were Walt's words to Skyler after pulling off probably his biggest achievement of the series up to that point. By crafting a plan that incorporates technology and manipulation, Walt was able to get his enemy to kill his arch-nemesis. By attaching a remote bomb to Hector Salamanca's wheelchair, Walt convinced Hector to ring his bell repeatedly to signal the bomb's ignition whenever Gus came to visit.
When Gus arrives, Tyrus scans the room for bombs and cameras, and completely misses the ticking bomb. Tyrus fills a syringe and hands it to Gus, and as he prepares to inject Hector—ring ring ring ring ring.