Rating news for ‘I Know What You Did Last Summer’ (reruns) July 19, 2009 News According to TVbytheNumbers.com, "I Know What You Did Last Summer" had 1.112 million viewers. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window) Related