Person of Interest Creator Teases the 'Exciting,' 'Tragic' 100th Episode (VIDEO) 

Person of Interest Creator Teases the \'Exciting,\' \'Tragic\' 100th Episode (VIDEO)

creator Jonathan Nolan offers to fans before the CBS drama\'s pivotal 100th episode airs. The hour is not only an important milestone, but it comes as the show is in its final arc of the story. (

\'s series finale airs Tuesday, June 21.)

In "The Day The World Went Away," Team Machine must protect Finch (Michael Emerson) when his cover gets blown. For a show that doesn\'t pull punches, the gorgeous installment brings the fight against Samaritan to the next level.

Bosses on the Premiere\'s Format Twist, Machine Drama, and Fusco\'s Journey

"We are just as upset as our fans will be about the way this show plays out," Nolan says. "But this is what\'s so funny: you make these things, and there\'s such a beautiful feeling when a story piece falls into place just right. You see the evolution of some of these characters has always been heading in this direction. It\'s such an exciting moment for where our story goes. But also tragic."

Check out an exclusive clip from the 100th episode, as Finch learns his number has come up.

Person of Interest\'s Reese and Finch Ponder Samaritan\'s Latest Move (VIDEO)

Person of Interest\'s Final Season: \'Every Episode Feels Like a Finale\'

Person of Interest\'s Team Machine Makes a Plan to Crash a Wedding (VIDEO)

Person of Interest Bosses Talk Creative Freedom in the Final Season

Still Reeling From That Bones Fall Finale Twist? TJ Thyne Speaks About the Life-Changing Future for Hodgins

Ask Matt: NCIS\'s Farewell to Tony, Bates Motel Post-Norma, The Middle, Castle, Underground and More

Days of Our Lives’ Galen Gering Dishes on His Disastrous TV Love Life

The Most-Watched TV Shows of 2015: Here Are the Episodes and Telecasts That Had the Most Viewers