Many of today's papers report on the murder of the children's author Helen Bailey, by her partner Ian Stewart.
The Times says Stewart drugged Ms Bailey over a period of months, lacing her morning scrambled eggs with a powerful sedative which left her tired and vulnerable.
The Guardian reports that Stewart began stealing money from his victim just hours after her death, raiding her savings account and attempting to sell one of her properties.
While the Daily Express says Stewart made a series of blunders following the murder, including keeping Ms Bailey's phone and referring to her in the past tense.
The Daily Telegraph reports that the government is under pressure to prove that none of the £20m paid to British terror suspects held at Guantanamo Bay ended up in the hands of the so-called Islamic State group.
The calls have been sparked by the case of Jamal al Harith - an IS suicide bomber who received up to £1m in compensation after being freed from the prison camp.
The Daily Mail has come out fighting after Tony Blair accused the paper of hypocrisy over its coverage of the case. The former prime minister pointed out that The Mail had led a huge media campaign for Harith's release.
But calling Mr Blair "increasingly delusional" and "mendacious", the paper says that while it had condemned Guantanamo Bay, it had never claimed the detainees weren't "very bad men".
Britain is wasting hundreds of millions of pounds on a failed green energy project according to the Times.
It reports the government has given huge subsidies to power stations to burn wood pellets, which it says do more harm to the environment than the coal they replaced.
The paper says the scheme was championed by former MP Chris Huhne when he was in the coalition government, adding that he now works for an American company that supplies wood pellets. Mr Huhne has denied any conflict of interest to the paper.
Cressida Dick, the first woman to become the chief constable of the Metropolitan police, makes a number of the front pages.
The Guardian quotes a former senior Met officer who says Ms Dick "inspires confidence" and can operate in tough, predominantly male situations as well as working with senior politicians.
The Daily Telegraph calls her "the first lady of the Met" and congratulates her on the appointment but says unlike some of her predecessors she "must chase criminals, not headlines".
If you struggle to eat five portions of fruit or vegetables every day, the Guardian has bad news for you.
It says scientists are recommending 10 portions a day. A team at Imperial College London believes that eating more fruit and vegetables would prevent about 7.8 million premature deaths across the world.
And "from rags to £14m lotto riches" is the Daily Mirror's headline about Britain's newest lottery winner. Beverley Doran, who gave up work to care for her autistic children, and told the paper that she had dressed in "rags" as all her money went on her family.
Now she has moved out of her council house in West Yorkshire and is staying in a hotel while she looks for a luxury home.
But, the paper adds, Ms Doran won't be celebrating with the usual bottle of champagne, as she is allergic to it.