Jamie Lee Warn (55) denies killing Zsuzsanna Besenyei last May and two counts of perverting the course of justice.
The jury of six women and six men heard seven days of evidence from over two dozen witnesses. They are due to start deliberating again on Thursday morning.
The prosecution claims that Mr Warn murdered the 37-year-old Hungarian woman – whom he had known for many years as they both worked at the former Les Charrières Hotel in St Peter – and then kept her body concealed in the boot of her car for three days.
It is alleged that Mr Warn then drove Miss Besenyei's car to Le Pulec Bay in St Ouen and left her body on the beach at low tide before continuing on to Le Haule and leaving her car on that beach.
Co-counsels for the prosecution, Crown Advocates Simon Thomas and Matthew Maletroit, have claimed that the defendant then sent messages from Miss Besenyei's phone to make it appear she was still alive.
Miss Besenyei's car was found on the beach after being flooded by the tide on 14 May. Her body was found by a dog walker at Le Pulec two days later.
The Crown has laid out its case with CCTV footage of what prosecutors maintain is Mr Warn's movements in the days around Miss Besenyei's death, and mobile phone data.
A post-mortem examination was unable to determine a cause of death for Miss Besenyei due to the degradation of her body in the days since her death and the effects of being left in seawater.
The defence case is that Mr Warn had no motive to kill Miss Besenyei and that the mobile phone data was not complete or sufficiently reliable for a conviction.
Advocate James Bell, defending, told the jury they cannot even be sure that Miss Besenyei was killed, based on the prosecution's evidence.