Just accessed it on the Roku channel.
Try it now,
P.S.: Hope they get their DR WHO info correct soon. {Sigh}
My complaint: Roku [which owns the sole supplier of ads to all Roku channels...not just the Roku Channel] does NOT carry closed captions on ads.
There's no GOOD reason NOT to carry them.
The Mentalist was on HBOmax this morning.
The Mentalist is not accessible through the Roku app on my Amazon Firestick. It is accessible through the Roku app on my Samsung Smart TV.