Rotten Ralph Sarah's cat promises to tell the truth.
6.10 Albert the Fifth Musketeer
Milady goes in search of Albert's secret weapon.
6.35 Chucklewood Critters The cubs learn about UFOs.
7.00 Arthur DW acquires her own library card.
7.25Taz-Manla Fun with the greedy
7.45 Tom and Jerry Kids Triple bill featuring the cat-and-mouse clowns in their salad days.
8.05 Looney Tunes Quadruple bill of Warner Bros cartoons.
8.35 The Wild Thornberrys Darwin is snared by poachers.
Busted, Kym Marsh and Triple 8 join hosts Fearne Cotton and Simon Grant in the studio, and Britain's muddiest football team report on their fixture at a Premiership club.
Plus celebrity dance moves in Saturday Morning Fever, fun with The Scooby and Scrappy Show, and live performances from Atomic Kitten and D-Side.
The Saturday Show Extra follows at 12 noon on CBBC channel
BBC Popgirl Magazine: Â£1.50
A look ahead as Aston Villa play host to Arsenal, West Ham visit Southampton, and Chelsea travel to Sunderland. Plus news of Manchester United's lunchtime clash at home to Liverpool. With Ray Stubbs and Mark Lawrenson.
Introduced from Aintree by Sue Barker and Clare Balding.
1.10 Grand National Build-up A look ahead to the 156th running of the world's greatest steeplechase, the Grand
National, starting at 3.45.
1.45 Racing from Aintree Three races ahead of this afternoon's main event, with starts at 1.45 and 2.20, plus, at 2.55, the running of the Aintree Hurdle.
3.45 The Grand National Live coverage of the world's top steeplechase, won last year by Bindaree and jockey Jim Culloty , who entered the Aintree history books when he followed up his Cheltenham Gold Cup triumph to complete a thrilling double.
Commentary by Jim McGrath ,
John Hanmer and Tony O'Hehir , analysis by Richard Pitman and Peter Scudamore , plus reports from Angus Loughran. You can bet on it: page 31
4.10 Race Re-run A review of the race from a variety of angles, including news of where horses finished, fell or pulled up.
Highlights are at 11.20pm. TV presentation (racing) Malcolm Kemp Editor Carl Hicks www.bbc.co.uk/racing
BBCi: interactive options for digital viewers
Monster adventure. When a vessel is sunk in the South n Pacific and enormous footprints are discovered in Panama, scientists are sent in to investigate. Radiation expert Niko Tatopoulos (Matthew Broderick ) has a theory - nuclear tests have mutated a lizard to gigantic proportions and Manhattan is under threat. Widescreen. Review page 45.
Director Roland Emmerich (1997, PG)
Dr Niko Tatopoulos:
Fame Academy's David Sneddon , rock legend Meat Loaf, ex-Spice Girl Emma Bunton and soul superstar
Lionel Richie perform on the lottery music show, hosted by Ian Wright. Includes the Lotto, Lotto Extra and Thunderball.
Director Richard Valentine ; Producer Suzy Lamb rhe National Lottery- Midweek Draws is on Wednesday at 9.50pm
I An Act of God. Harrytakes drastic measures to save patient. Merlin looks forward to meeting his birth mother.
Written by Jason Sutton ; Producer Foz Allan ; Director Euros Lyn
Lee Stanton Howard:
The nine remaining amateur sleuths continue to investigate the "killing" of Catherine Prior in the second of the eight-part murder-mystery game show. New lines of inquiry are set, and there's a shock when the killer leaves a macabre message for the investigators. And who will be voted out of the contest in the "killer's game", thus forfeiting a chance to win
£25,000? The Murder Game: Inside HQ follows on BBC3. Series editors Nichola Hegarty and David Tibballs BBCi: special features available to digital viewers www.bbc.co.uk/murdergame
With Darren Jordon.
Weather with Darren Bett.
Followed by National Lottery Update
Michael Parkinson welcomes actor Neil Morrissey , Top Gear presenter Jeremy Clarkson and actress Denise Van Outen , who recently starred in the Broadway version of Chicago.
Director Stuart McDonald ; Executive producer Beatrice Ballard
Another chance to see this afternoon's big race. With Clare Balding.
n Science-fiction horror starring Christopher Reeve and Kirstie Alley. All the children in a Californian village are born with disturbing abilities. Widescreen. Review page 45.
Director John Carpenter (1995.15) Film Trivia: page 48
With actors Honor
Blackman and Alan Cumming. shown yesterday
Guests include Joe Calzaghe and Dean Macey. Shown yesterday
Followed by Weathervlew
Chart hits. Shown yesterday