Adam Campbell as Young Donald "Ducky" Mallard
On NCIS: In "So It Goes," Ducky has a series of flashbacks that introduce us to his life pre-NCIS. Handsome and charming, young Ducky makes our hearts flutter!
Where you may have seen him on CBS: Adam plays Graham on 2 Broke Girls.
Watch Ducky reveal secrets from his past in "So It Goes" on CBS All Access.