No explanation from her was ever given, but apparently she had a huge opioid addiction.

Source: http://www.crazydaysandnights.net

Why did this beloved A/A- list mostly television actress walk away from a very popular network show that has several other spinoffs?

No explanation from her was ever given, but apparently she had a huge opioid addiction.

Being on a set every day for long stretches just gave her too much opportunity to keep taking them.

She said she needed a change and several months of rehab and then outpatient treatment.

She is finally at a point where she is working again, but she says never television again.

It has too many triggers.

Marg Helgenberger

CSI: Crime Scene Investigation