Can Holmes teach Watson his powers of deductive reasoning on Elementary? "Possibility Two" is the 16th episode of the show's first season.
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Elementary Season 1 Episode 17 Quotes

Sherlock: Strain yourself to be alert to the bizarre and the unusual; that which has no place in any given picture.
Watson: Like that stretch limo with the driver staring straight at us?

Watson: Hey, what's this?
Sherlock: You're a detective now, you tell me?
Watson: Ah, it looks like you left your dry cleaning ticket for me.