Single space TOC

[Joseph Hesse]

I am writing a book with separate chapters in a master document.  My TOC 
prints double spaced and I want to make it single spaced.

I have the package setspace and I have \usepackage{setspace} in the 
preamble.

In the master document I surrounded the Table of Contents entry with the 
tex code \begin{singlespace} and \end{singlespace}.  This causes no 
errors but it doesn't work, the TOC is still double spaced.

Any help is much appreciated.

Thank you in advance,
Joe