Newspaper headlines: 'Police arrests halve' and 'MP murder plot' - BBC News
Arrests in England and Wales have nearly halved since 2008, despite a rise in recorded crime.
The Daily Telegraph leads with figures showing the number of arrests in England and Wales has nearly halved in the past decade to under 780,000. It reports that the fall is partly due to a strategy to "keep young children out of jail by giving them cautions and warnings".

But the paper says that with certain types of crime - including violent offences - on the increase, "someone has lost a sense of priorities". It claims police are losing control and "need to get a grip".

Parliament is facing a new scandal, according to the Sun, which claims a number of MPs have been named in a secret list of alleged "sex-pests". The Sun says the politicians have been named in a WhatsApp group set up by women working in Parliament and Whitehall.

The paper says it is suggested that the first MP could be named publicly by the weekend, with one source suggesting "there could be resignations".

The Guardian's main story says shopkeepers have been given a "grim omen" in the run-up to Christmas, with figures showing retail sales falling at their fastest rate since the height of the recession. The paper says the news sent "shockwaves through the High Street", with the CBI warning that inflation is eating into people's spending power.

The Times says a research project has found that watching Shakespeare's most gruesome play, Titus Andronicus, increases heart rates to such an extent that it's the equivalent of a five-minute cardiovascular workout.

Heart monitors were attached to volunteers before a performance of the play by the Royal Shakespeare Company. The theatre company says the play's 14 deaths produced heightened heart rates equivalent to running on a treadmill.

The Huffpost News website highlights research which suggests that Jeremy Corbyn could become prime minister by swinging just a few hundred votes towards Labour in 45 towns in marginal constituencies across the UK.

The website says early findings by a new think-tank, Centre for Towns, suggest that "Labour can take power" by addressing the concerns of voters in urban areas often seen as remote from from London and other big conurbations.

Reporters have been poring over the mass of documents relating to the assassination of President Kennedy which were declassified on Thursday evening, although hundreds more are being kept secret for the time being.

The Washington Post says thousands of field reports, cables and interview summaries reveal the minutiae of a chase for information that spanned decades and covered continents.

The Dallas Morning News picks out a set of notes by the CIA on a conversation with Soviet leader Nikita Khrushchev in 1964, the year after the shooting. He apparently said he didn't believe American security was so inept that Kennedy could have been killed without a conspiracy.