Highlights from the Sixth Episode of Season 4 of Hawaii Five-0

Is paradise overrun by zombies? Halloween week ends with a bite.

1. "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, right, Alex O’Loughlin, left) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Best Possible Screen Grab/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Costume Party on

2. Costume Party on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, left, Alex O’Loughlin, second from left, with guest star Corbin Bernsen, seated with legs extended) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Backing Up on

3. Backing Up on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, left, Alex O’Loughlin, center, with guest star Corbin Bernsen, right) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Back and Forth on

4. Back and Forth on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Alex O’Loughlin, left, with guest star Corbin Bernsen, right) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Photo Evidence on

5. Photo Evidence on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, left, Alex O’Loughlin, center, with guest star Corbin Bernsen, right) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Pointing Fingers on

6. Pointing Fingers on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Alex O’Loughlin) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0 Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Not for Playing Games on

7. Not for Playing Games on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, left, Alex O’Loughlin, right) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Halloween on

8. Halloween on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, right, Alex O’Loughlin, left) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Norman Shapiro/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Entrance on

9. Entrance on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, left, Alex O’Loughlin, right) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Best Possible Screen Grab/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Trying to Get In on

10. Trying to Get In on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, right, Alex O’Loughlin, left) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Best Possible Screen Grab/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Three Times the Fun on

11. Three Times the Fun on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Corbin Bernsen (center) guest stars. Photo: Best Possible Screen Grab/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.
Party Patrol on

12. Party Patrol on "Kupouli 'la" Season 4 Episode 6

When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 (Scott Caan, right, Alex O’Loughlin, left) races to stop a mad-man conducting experiments on humans, on HAWAII FIVE-0, Friday, Nov. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Best Possible Screen Grab/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.