Medium Season 7 Episode 3 (Medium s07e03) with title “Means and Ends” aired on Friday, October 8th 2010 at 08:00 pm via CBS Network.
Here is summary for :

Scanlon is haunted by dreams of his late brother, leaving Allison concerned about her colleague. Also, while making her final preparations for college, Ariel has visions of missing young women, past and present.