Former real estate agent Gerard Baden-Clay is due to face trial in Brisbane on Tuesday accused of murdering his wife Allison.

The murder trial of accused wife killer Gerard Baden-Clay is due to begin in Brisbane on Tuesday.

The 43-year-old is accused of murdering his wife Allison, 43, in April 2012.

Allison Baden-Clay’s body was found on a creek bank at Anstead in Brisbane’s west on April 30, 2012.

The discovery was made 10 days after Baden-Clay reported his wife missing from their home in the nearby suburb of Brookfield.

The former real estate agent was arrested and charged with murder in June 2012.

He has pleaded not guilty.

As many as 72 witnesses could be called to give evidence during the trial, which is expected to run for up to four weeks in the Supreme Court in Brisbane.

Potential jurors will be polled during the selection process in a bid to detect bias.