Wednesday 6 January 2010 - in more detail
Two senior Labour backbenchers are calling for a secret ballot on Gordon Brown's leadership. Ex-cabinet ministers Patricia Hewitt and Geoff Hoon have emailed Labour MPs calling for the leadership issue to be sorted out "once and for all".
So will the challenge succeed or fail? Would the successful removal of Brown help Labour? Tonight we'll be trying to answer the questions behind the plot against the PM.
We're also hoping to speak to the Business Secretary Lord Mandelson, and then we have the first UK TV interview with Iceland's President Olafur Ragnar Grimsson who yesterday vetoed a bill that would reimburse the UK and Netherlands for bailing out depositors of a failing Icelandic bank.
Mr Grimsson's parliament are due to meet on Friday to plan a referendum on the controversial Icesave bill.
Do join Jeremy at 10.30pm on BBC Two for all that and more.