Help on solving a riddle! alright well, i found this riddle in my friend's profile and after hours of thinking and examing, i can't really get it and was wondering anyone here can help me solve it. so here it is: RIDDLE: read the whole thing first, there are no errors A detective chases two guys down after a reported robbery at a nearby jewelry store Detective: ur both under arrest The guy on the left: Now hold on officer, we didn't both commit the crime. One of us chickened out. Other guy: but one of us robbed the store Left: One of us tells the truth Other: and one of us lies Left: I didn't rob the bank Other: I didn't take the jewels Left: You missed our other accomplices, they left with the loot before you got here Other: I don't know what he's talking about, I was never involved in this crime Left: He's right, neither of us robbed the store Other: that's a lie. But sometimes, we switch roles and the truth teller tells lies while the liar tells the truth The detective immediately knew the guy on the left was involved with the crime. How did he know? It seems pretty tough, but i'm sure the answer is right there like almost all other riddles. Any help would be appreciated. Thanks!