A skunk-smoking mother who murdered her two young sons in the bath while in a psychotic state has been jailed for life with a minimum term of more than 21 years.
Kara Alexander was found guilty of drowning Elijah Thomas, two, and Marley Thomas, five, at the home they shared in Dagenham, east London, in December 2022.
Alexander, 47, who had denied two counts of murder, was convicted at Kingston Crown Court in February.
Post-mortems on the boys found they had either been drowned or suffocated – but Alexander accepted at trial that she had placed them in the bath before they “accidentally” drowned.
Returning to Kingston Crown Court on Friday, Mr Justice Bennathan sentenced Alexander to life imprisonment with a minimum term of 21 years and 252 days.
The judge referred to the children’s father finding his deceased sons next to one another as “the stuff of nightmares”.
Mr Justice Bennathan said: “On the evening of 15 December 2022, you’d been smoking skunk.
“You’d been doing so every night for weeks, probably much longer. At some stage, both the boys were in their pyjamas ready for bed, with Elijah also wearing his nappy.
“You drowned them both by your deliberate acts.”
The judge said Alexander “unspeakably” held the boys under water for “up to a minute or two”.
“The bath was probably still run from their normal evening routine and I do not think for a moment that your dreadful acts were pre-meditated,” he said.
The judge said Alexander dried the boys, put them in clean pyjamas and laid them together, tucked in under duvets, on the same bunk bed.
“The next morning, their father, worried by your unusual silence, came and found them. The stuff of nightmares,” he said.
The jury heard how the boys’ father was due to have them that weekend and became increasingly concerned when he had not heard back from Alexander.
When he arrived at their home, she told him the children were upstairs sleeping.
When the father returned downstairs to call for help, Alexander had run away. It took the police around an hour to find her.
The Metropolitan Police said forensic analysis of Alexander’s phone, which had been found in a filled sink, showed it had been in regular use in the run-up to the murders, but on the day the children were found, no calls were made or messages sent.
This led detectives to believe that she had intentionally been avoiding people following their deaths.
Prosecutors said they built their case on showing the boys could not have accidentally drowned and that the only reasonable explanation for their deaths was that Alexander caused them to drown.
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The judge said there was every sign Alexander was a “caring and affectionate” mother to both children before the events of 15 December 2022.
He pointed out that their father said Alexander “never shouted or raised her voice at the boys” and “never showed violence to the boys”.
The judge said: “From all that I have read and seen of you, I have no doubt that every day when you awake you will remember and grieve for the little boys whose lives you snatched away.”
Mr Justice Bennathan said Alexander was in a psychotic state when she killed her sons and that it was cannabis induced.
He said Alexander had a previous psychotic episode in 2016 in which cannabis also probably played a part, but acknowledged he could not be sure she was aware that the drug could trigger another psychotic state.
In his sentencing remarks, Mr Justice Bennathan warned of the dangers of drugs.
He said: “The heavy use of skunk or other hyper-strong strains of cannabis can plunge people into a mental health crisis in which they may harm themselves or others.
“If any drug user does not know that, it’s about time they did.
“At your trial, Kara Alexander, the three psychiatrists who gave evidence disagreed about a number of things, but on that they were unanimous.
“It will comfort nobody connected to this case, but if these events bring home that message to even a few people, some slight good may come from what is otherwise an unmitigated tragedy.”
Detective Chief Inspector Paul Waller, who led the investigation, said: “This is an incredibly tragic case, which has left a father without his two beloved boys and a family without two young brothers.
“Kara Alexander will spend the next two decades behind bars, where the memory of what she has done will haunt her forever.
“To the family and friends of Elijah and Marley, while no amount of time will erase the pain of such a loss, I hope this sentence serves to bring some semblance of justice.
“I hope you can now move on with your life, remembering the boys as you knew them, and treasuring the happy times you spent with them.”