Constance Marten and Mark Gordon are a couple who went off-grid between 5 January 2023, when their burning car was found abandoned near Bolton, until the date of their arrest on 27 February 2023, in Brighton. Their disappearance coincided with the birth of their daughter. When the couple were subsequently arrested, they were not with their baby, triggering a police search involving over 200 officers across an area of around 90 sq mi (230 km2) extending from Brighton to Newhaven.
Constance Marten and her partner Mark Gordon caused the "entirely avoidable" death of their baby daughter, their retrial has heard.
Constance Marten's lawyer says the death was caused by her "falling asleep and compromising her baby’s breathing".