'Survivor' Producer's Wife - No Custody for My Sister

5/28/2010 6:30 PM PDT

'Survivor' Producer's Wife - No Custody for My Sister

TMZ has obtained a copy of a will left by the murdered wife of Bruce Beresford-Redman -- it was written just 2 years ago and gives a former "Survivor" crew member "full and complete custody" of the couple's kids if both Monica and Bruce die -- cutting out Monica's own sister.

The will -- signed in 2008 -- supersedes the prior will of 2004.  The new will says if both Bruce and Monica die, she asks custody be vested in Steve M. Smalley

The 2004 will gave custody to Carla Ferreira-Burgos, Monica's sister.  But the 2008 will would invalidate the 2004 version.

A man with the name Steve Smalley is listed as a camera assistant for "Survivor: All-Stars."  Bruce also worked on the All-Stars show.

Here's the complication.  One parent cannot will a couple's children to someone.  But it is something a judge would consider, especially if Bruce is out of the picture for any reason.

And it's very interesting that Monica specifically left Carla out of the 2008 will.

The 2008 will was filed in court two days ago by Bruce's father.  Carla is challenging the will, calling it "extremely suspect" and claiming Monica's signature does not seem authentic.