Giovinazzo was cast as forensic scientist Danny Messer on the hit TV series CSI: NY and is the first actor to appear in all three CSI series; his character was introduced in the CSI: Miami episode "MIA/NYC NonStop" (along with the other CSI: NY cast members), and he guest-starred in season three of the Las Vegas-based original series as street racer Thumpy G in the episode "Revenge is Best Served Cold" (though it is never specified that this guest spot was in any way related to his character on CSI: NY). Giovinazzo penned season six's vampire-themed episode "Sanguine Love",Batallones, Henrik (February 3, 2010). "CSI: NY: Previewing Episode 6.14 'Sanguine Love'". BuddyTV. Retrieved July 26, 2011. joining series leads Melina Kanakaredes and Gary Sinise who have also written episodes for the series.
