A look back at the deaths of two tourists on Phi Phi Island in 2009

The recent death of two sisters from Quebec on Phi Phi Island in Thailand still has officials in that country trying to figure out what happened. Their death comes after two other women were also found dead on the same island in 2009.  Susan Campbell speaks with Adam Skolnick, a free-lance writer who has co-authored books for Lonely Planet and who reported on the two women who died in 2009.