Detective Sergeant Nick Bailey said poisonings in March 2018 "took so much from me" as he announced his departure from Wiltshire Police.
Emergency services were met with "devastating scenes", police said.
Initial medical checks suggest they are not believed to be in a serious condition.
Sherry Bray and Christopher Ashford accessed footage of the post-mortem examination being conducted on Sala's remains.
Martin Freeman portrays Detective Superintendent Steve Fulcher, a man who had to make life-changing choices between protocol and justice, in ITV drama 'A Confession'.
Details emerge as teenage boy appears in court charged with her murder.
Teenage suspect will appear in court on Tuesday.
A 17-year-old boy has been arrested on suspicion of murder.
Police have launched a murder investigation in Calne.
The Argentinian striker died in a plane crash in January.
Mum-of-four Linda Razzell vanished nearly two decades ago.
He attempted a smash-and-grab raid.
Anna Shapiro says her fears were genuine.
Both victims have been discharged from hospital, having tested negative for poison.
Witnesses say they are Russians.
A 29-year-old man from Southampton died in the incident.
Police said there is no further risk to the public.
The helicopter was grounded while tests were carried out.