It's the 2nd line of the tagline that appears intermittently at the top of the window the video appears in on this link. (May need to scroll down to see the video window.) https://www.oxygen.com/golden-state-killer-main-suspect/crime-time/golden-state-killer-main-suspect-two-hour-special
Thank you, again, in advance for all your great work! Much appreciated!!
Hard to be sure given the size and resolution of your sample, but I think it is Calibri, an MS-Windows font (and installed on most Macs if you are running Microsoft Office).