Magnum, P. I. The series ran on CBS, which. Magnum, P. I. Opening Credits 1. The series ran from 1. I3QyvOi8eR0UJ7b_71QA--/YXBwaWQ9aGlnaGxhbmRlcjtzbT0xO3c9Njg4O2g9MTAyNDtpbD1wbGFuZQ--/http://40.media.tumblr.com/a07fd3e41fbdfa046178a96b86e33b8c/tumblr_inline_nz8x928a0m1tdxcm2_1280.jpg' alt='Magnum Pi Season 8' title='Magnum Pi Season 8' />American CBS television network. According to the Nielsen ratings, Magnum, P. I. Originally appearing in a prime time American network timeslot of 8 p. Eastern on Thursdays, Magnum, P. Watch Taking Stock Full Movie there. Watch City Rats Online Hulu on this page. Magnum, P. I. Selleck en bijrolspeler John.