Entertainment Weekly looks back on the most chilling moments from the grim crime series.

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Criminal Mindsis something of an acquired taste.

The series follows the FBIs Behavioral Analysis Unit.

CRIMINAL MINDS - Joe Mantegna (David Rossi), Paget Brewster (Emily Prentiss), Adam Rodriguez (Luke Alvez), A.J. Cook (Jennifer Jareau)

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As with any long-running series, some episodes are better than others.

So, how can you tell which entries are actually worth your time?

On a brighter note, this episode brings Paget Brewster back as a series regular.

CRIMINAL MINDS - “Elliott’s Pond”

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Or thefirstlanding, as it turns out.

It all leads to a final five minutes almost certain to leave you speechless.

Amidst all of that is a decently engaging story about the team investigating the murders of sex workers.

CRIMINAL MINDS - “And in the End”

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Elephant’s Memory (season 3, episode 16)

Whats that?

Youre ready formoreReid trauma?

Elephants Memory focuses on Reids attempt to help a teenage spree killer named Owen Savage (Cody Kasch).

CRIMINAL MINDS - “Entropy”

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Lucky (season 3, episode 8)

Some episodes ofCriminal Mindsare more focused on guest stars than others.

300 (season 14, episode 1)

Its not very creative to name your 300th episode 300.

Its with those little callbacks thatCriminal Mindsrewards longtime viewers in a way many police procedurals never do.

Criminal Minds

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CRIMINAL MINDS - “Mosley Lane”

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Criminal Minds

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“100” – Hotchner (Thomas Gibson, left) relies on members of the BAU team, including Morgan (Shemar Moore, back center), Garcia (Kirsten Vangsness, center) and Rossi (Joe Mantegna, right) in the hunt to find the Reaper before he reaches HotchnerÕs family, on CRIMINAL MINDS

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CRIMINAL MINDS - “Believer”

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CRIMINAL MINDS - “A Beautiful Disaster”

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Criminal Minds

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CRIMINAL MINDS - “Masterpiece”

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CRIMINAL MINDS - “Mr. Scratch”

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CRIMINAL MINDS - “The Uncanny Valley”

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CRIMINAL MINDS - “The Replicator”

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Criminal Minds

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CRIMINAL MINDS - “Zugzwang”

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Criminal Minds

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CRIMINAL MINDS - “Lauren”

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CRIMINAL MINDS - “Date Night”

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CRIMINAL MINDS - “300”

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