Best TV stupidity of 2012

Episode #3.1 - S3-E1

Stupidity: Ronan Murphy is left handed. Watch carefully as he disarms himself. His weapon is replaced in his right hand. In a suspicious shooting, they never thought to check something so basic? (00:04:12)

King Memses' Curse - S1-E13

Stupidity: The bad guys tied up, bound and gagged a 100 pounds teenager, but left the policeman they captured completely free of any restraints whatsoever in the same room (no real reason why they wouldn't have killed him).

Sammo ★

A Stitch in Time - S1-E1

Stupidity: During a shootout in front of a bank, one of the bank robbers lays his shotgun on the trunk of a car and yells "I'm out!" However, he has 6 additional rounds in a shell holder on the side of the gun. (00:35:20)

Kako kara no tegami - S1-E2

Stupidity: The sunrise that saves Dio is amazingly fast, since it goes from night to day in 5 seconds.

Sammo ★

Alma Matters - S4-E10

Stupidity: Lilly says that she is compiling a criminal case against her employer, who recently had another whistleblower killed. Inconceivably, neither Sherlock nor Joan recognizes that this puts Lilly in mortal danger. (00:06:49 - 00:08:45)

Rich Janis

Run Like Hell - S11-E14

Stupidity: Mouch is investigating an arson allegation. He states to a lady he's going to do his thing and speak to some of the residents. As he goes down the hall to speak with the residents he passes a huge stain on the carpet that looks like blood or something and walks right past it without stopping. (00:23:57)

Snag.1