(Now and Then) Captain Grover is aided by McGarrett in his search for a friend who has disappeared, after it seems like he's committed murder. Kono persists in her quest to find Adam.

Ekona Ravey, Eugene Shaw, Jennifer Fairbank, Joanna Georgiev, Karl Makinen, Laurie Fortier, Lili Simmons, Mahealani Richardson, Mark Malalis, Michael Ray Clark, Nicholas Yee, Nick Hoffa, Spencer Churchill, Zay Harding, Zeus Kang