The phrase 'Caught Red-Handed' means to catch a person in the act of doing something wrong.
Example of Use: "Tom was stealing the car when the police drove by and caught him red-handed."
No one wants to be caught red-handed. The origin of the idiom 'caught red-handed' is ancient, but it’s such a powerful statement that it remains popular to this day. Historians agree that the term originated in Scotland during the 15th century, when it was used to describe capturing a murderer who still had blood on his hands.