Who killed an ex-Yakuza gang member?

That was revealed on Elementary Season 6 Episode 6 when the investigated the world of nuclear security. 

Watch Elementary Season 6 Episode 6 Online

However, the pair realized they had bitten off more than they could chew when they were put in danger. 

Also, Captain Gregson was blindsided by a stunning personal confession from his daughter. 

What was it all about, and did he manage to move on from it in a swift manner?

Use the video above to watch Elementary online right here via TV Fanatic. 

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Paul Dailly was an Associate Editor for TV Fanatic.Follow him on X.