Police and forensic experts are expected to identify the huge volume of evidence and exhibits gathered by the prosecution.

Some 70 witnesses have already testified out of the 90 expected to give evidence for the prosecution.

Nancy Kissel, 41, is accused of serving her husband, former Merrill Lynch banker Robert Kissel, a pink milkshake laced with sedatives that left him unconscious at the foot of the bed, enabling her to beat him to death with a metal ornament.

Friends and family have testified Robert Kissel spoke of divorce that night, November 2, 2003, believing his wife was being unfaithful.

Nancy Kissel, who denies murder and is out on bail, claimed her husband was drunk and beat her when she refused him sex. He then disappeared.

His decomposing body was found in the early hours of November 7, wrapped in a carpet in storeroom 15112 at the Parkview residential complex, Tai Tam.

Police have collected bloodstained items from the Kissel residence.

Police scientific officer Tam Chi-chung, who conducted the first forensic search of the bedroom November 7, testified last Monday that he found small spots of blood on walls, the headboard of the bed, a picture frame, the top of a side table, the side of a wardrobe and on the television.

There was also a large brown stain on the bed beneath the covers.

Tam also used a chemical test to confirm that the large stain on the carpet at the foot of the bed, first concealed by an overlaying carpet, was blood.

He said a piece of cloth from the foot of the bed had been ripped off.

Under cross-examination from defense counsel Alexander King, Tam said he only used the test once, on a carpet stain, to confirm stains around the room were blood.

King suggested to Tam Tuesday that the large stains he found on pillows were old sweat marks, since he did not conduct tests to confirm they were in fact blood.

Tam said he conducted only a preliminary examination and Dr Lun Tse-shan completed more thorough ``blood patterning'' tests the following day. Dr Lun is expected to testify later.

The trial continues today before Justice Michael Lunn.

albert.wong@singtaonewscorp.com