Season 2
As Season 2 begins, McGarrett is in jail awaiting trial and Danny comes to visit him with a special guest. Danny finds out that Rachel's intentions may be different than he was hoping for. The task force gets a new team member whose job is to keep them in line.
Episodes
1 Ha‘i‘ole (Unbreakable) Sep 19, 2011 
2 Ua Lawe Wale (Taken) Sep 26, 2011 
3 Kame‘e (The Hero) Oct 3, 2011 
4 Mea Makamae (Treasure) Oct 10, 2011 
5 Ma‘ema‘e (Clean) Oct 17, 2011 
6 Ka Hakaka Maika‘i (The Good Fight) Oct 24, 2011 
7 Ka Iwi Kapu (Sacred Bones) Oct 31, 2011 
8 Lapa‘au (Healing) Nov 7, 2011 
9 Ike Maka (Identity) Nov 14, 2011 
10 Ki‘ilua (Deceiver) Nov 21, 2011 
11 Pahele (Trapped) Dec 5, 2011 
12 Alaheo Pau‘ole (Gone Forever) Dec 12, 2011 
13 Ka Ho‘oponopono (The Fix) Jan 2, 2012 
14 Pu‘olo (The Package) Jan 16, 2012 
15 Mai Ka Wa Kahiko (Out of the Past) Feb 6, 2012 
16 I Helu Pu (The Reckoning) Feb 13, 2012 
17 Kupale (Defender) Feb 20, 2012 
18 Lekio (Radio) Feb 27, 2012 
19 Kalele (Faith) Mar 19, 2012 
20 Ha‘alele (Abandoned) Apr 9, 2012 
21 Pa Make Loa (Touch of Death) (I) Apr 30, 2012 
22 Ua Hopu (Caught) May 7, 2012 
23 Ua Hala (Death in the Family) May 14, 2012