A lawyer for the police said he was worried about "sensationalising" the inquest with a live demonstration of the bag and offers a video clip by an expert as alternative.
Police reveal "problems in the DNA analysis" of mixed profile found on Williams' hand - found the contamination was from scientist at scene.
The error was spotted by a scientist who's evidence helped convict the killers of Stephen Lawrence in January. The coroner wants to hear from her.
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The 90-year-old victim watched in horror from her bed as the thief climbed in through her bedroom window.
The remains of Sophie Lionnet, 21, were discovered in a garden at a house in Southfields, south-west London last year.
Port drugged and raped four young men and dumped their bodies near his home in Barking, east London.