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CSI: Crime Scene Investigation fanart Welcome to CSI: Crime Scene Investigation at WatchOnlineFree.TV, a great website for those who love to watch CSI: Crime Scene Investigation online for free. Here you can stream all episodes online without having to downloading any additional software on your computer. If you missed the latest CSI: Crime Scene Investigation episode on TV, make sure to check our website to follow up on this series!


Latest episode, aired 1 day ago.

The Book of Shadows
Episode 4
Air Date: Oct 19
Season: 15

The Book of Shadows

A chemistry teacher's science experiment goes horribly wrong.

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Bad Blood
Episode 3
Air Date: Oct 12
Season: 15

Bad Blood

Sara and Greg are quarantined after responding to a crime scene that's contaminated with a deadly pathogen.

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Buzz Kill
Episode 2
Air Date: Oct 5
Season: 15

Buzz Kill

The CSI team investigates a robbery and fatal shooting at a medical marijuana shop.

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The CSI Effect
Episode 1
Air Date: Sep 28
Season: 15

The CSI Effect

Finlay must deal with a bomb planted in her car. Russell gets a call from someone claiming to be the Gig Harbor killer.

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Dead in His Tracks
Episode 22
Air Date: May 7
Season: 14

Dead in His Tracks

The CSIs investigate a present-day crime with ties to a mob heist that occurred 25 years ago. Meanwhile, Brass has a decision to make when h…

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