Did Sherlock and Joan know Shinwell as much as they thought they did?
That was questioned on Elementary Season 5 Episode 19 when they entertained the possibility that he could have murdered a friend and gotten away with it.
Meanwhile, the pair searched for a treasure map which was rumored to lead to a fortune in pirate's gold hidden in New York City.
Did they allow Shinwell to accompany them on the journey?
Use the video above to watch Elementary online to get caught up with the latest drama for the characters.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.