The Ending Of Inside Man Season 1 Explained

Jefferson Grieff ends the series still in lockup with his secrets. A mix of Red Reddington and Hannibal Lecter, the most interesting things about Grieff are the things we'll never know. Why did he kill and decapitate his wife? Where did he put her head? Why does he take the cases that he takes? For four episodes, we are teased with this information — a puzzle box mystery to contain all the other puzzles — and in the end, we're back where we started. In a lesser show, this would feel like a failure, but here it just makes us wish for more Grieff, Casey, and Morag. 

Speaking of puzzle boxes, however, it's worth noting that Grieff's whole storyline — and thus the main premise of the show — is supported by his Sherlockian genius. However, as noted earlier, we only know he's a genius because people keep saying he's a genius. This can make that aspect of Grieff feel self-congratulatory and at times unearned, especially as so much of Tucci's performance is about delaying satisfaction and keeping secrets for sometimes minor reasons or none at all. 

The repeated refrain of "Work it out for yourself," and then the person either trying or failing to work it out for themselves sets Grieff up as an impossible genius, and the repetition gets tiring. But Tucci never wavers, and that makes his performance magnetic.