In Shawshank Redemption, how did Andy Dufresne dig a tunnel if there was a cell next to him. He had to go through it, yet he obviously didn't.
His cell was the last one on the row, so there was no cell next to his.
Edit: I should say, his cell was the last on the row and only had 1 adjacent cell to the left and he dug out a hole on the right wall.
Andy, as both a model prisoner and a cog in the warden's money laundering scheme, was given 2 priveleges; the last cell on the end of the row (a coveted cell for Andy because of its distance from most activity, which made it quieter), and a cell of his own. You may recall that he didn't set out to dig a tunnel, it just started when a chunk of the wall fell out while he was etching on it.
As a result of his 2 privileges, he was able to dig a hole in the wall that led to the sewer pipe, and he was able to do it undetected since he didn't have a cellmate.