With the Hawaii Five-0 Season 3 premiere just over a month away, CBS has released a few key details regarding new fall episodes.

Starting with our first look at Christine Lahti in the key recurring role of Doris McGarrett.

The character will return to face her son after a 20-year absence and, as teased in the official network description and as seen below, Steve will ask Michelle to keep an eye on dear old mom...

Meanwhile, CBS has also come out with the synopsis for the second episode of Season 3. It will air on October 1, it will be titled "Kanalua" and it will reportedly follow a "shocking death."

Read the simple, albeit intriguing, outline now:

After a shocking death, Danny and McGarrett participates in a traditional Hawaiian paddle-out.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.