7.15 Cognitive Styles

7.40 Transition Metals

8.5 Maths: Fourier Coefficients

John Earle continues his series of nine programmes about the techniques of rock-climbing. With Ron James
(Repeat)

During a storm Lassie, with Ron and Dale, finds an abandoned house with mysterious things that go bang in the night.
(Repeat)

(Repeat)

Written and directed by Charles Chaplin.

Charlie becomes a prop man at the Lockstone Film Studio and blunders his way into the acting business.
With Ben Turpin and The Keystone Cops.

The Sun Alliance
PGA Championship from Ganton
PETER ALLISS introduces coverage of the second round.
NICK FALDO , MANUEL PINERO , NEIL COLES and VICENTE FERNANDEZ are former winners of this tournament who will be bidding to take the title again, together with the first prize of £11,660. Commentators
CLIVE CLARK , BRUCE CRITCIILEY , ALEX HAY and TONY JACKLIN
Television presentation
RICHARD TILLING and ALASTAIR SCOTT Executive producer DAVID KENNING
(Further golf coverage follows in Grandstand and on BBC2 at 4.0 pm and tonight at 11.25)
(And appropriately Kevin Keegan is tonight in Around with Alliss on BBC2 at 7.10)

See panel

based on the books by FRANKLIN W. DIXON and CAROLYN KEENE and in The Creatures Who Came on Sunday
When Sharon Anderson 's boy-friend Peter suddenly disappears, she turns to the Hardy boys for help. Frank and Joe become quite interested in the case when it looks as if visitors from another planet - and very unpleasant ones at that - have something to do with the mystery of the missing man.
Written by DAVID BALKAN Directed by RICK KOBLE (Postponed from 9 May)

with Peter Woods ; Weatherman

starring Terry Wogan
Each week two teams of contestants join Terry for this comedy-game show about hoaxes, spoofs and tall stories. Find out just how gullible the two teams are as well as the family at home when Terry asks them to judge the authenticity of obscure objects, faulty films and the surprising secrets of a Star Personality.
Programme associates
JEREMY BEADLE and TONY HAWES Sound LAURIE TAYLOR
Lighting PETER WESSON Designer BOB COVE
Director KEITH STEWART
Producer MARCUS PLANTIN

starring Clu Gulager with Ralph Bellamy Blair Brown
Stella Stevens
Charlie Cobb , a private eye of the 1870s, is hired to deliver a young lady to a wealthy Californian rancher who believes she is his long-missing daughter. However, there are a number of people who want to prevent Charlie from completing his mission.
Clu Gulager stars as the private detective in this lively adventure with several surprising twists in the plot.
Written and produced by PETER S. FISCHER Directed by RICHARD MICHAELS
(First showing on British television) Films: page 10

Entertainment for all the family live from the Television Theatre in London. Starring Val Doonican Special guests Lena Zavaroni Keith Harris with Orville and introducing Canadian Brass THE SATURDAY SINGERS featuring Tracey Miller , Victy Silva and Val Stokes with Camilla Blair , Jane Danielle and Victoria Shellard
Musical director RONNIE HAZLEHURST Musical associate ROGER RICHARDS
Written by CHRIS MILLER , VAL DOONICAN Costume designer LYNDA WOODFIELD Sound KEITH GUNN
Lighting KEN MACGREGOR Designer MARTIN COLLINS
Production YVONNE LITTLEWOOD

with Peter Woods ; Weather

A series in 13 parts by ALEX HALEY The extraordinary saga of one man's search for his roots which led to a best-selling book and two highly successful television series on both sides of the Atlantic, starring
3: 1776/ Kunta Kinte is now 30 years old and still rebellious. He tries yet again to escape and this time his punishment seems certain to put an end to any further attempts to run away.
Written for television by JAMES LEE and WILLIAM BLINN Produced by STAN MARGULIES
Directed by MARVIN J. CHOMSKY
A david WOLPER production

from Las Vegas The WBC Light-Middleweight Championship Maurice Hope
(champion) v
Wilfredo Benitez (challenger)
Britain's MAURICE HOPE faces the toughest test of his career at Caesar's Palace, when he meets the Puerto Rican, WILFREDO BENITEZ.
If Benitez wins, he will become the first fighter to win world titles at three weights since Henry Armstrong in the 1930s. He won the Light-Welterweight crown in 1976, went on to take the Welterweight title from Carlos Palomino , and only lost it after a classic battle with Sugar Ray Leonard.
Hope, whose career was nearly ended by eye trouble a year ago, has won great support since, with two brave title defences.
Commentator HARRY CARPENTER Introduced by DESMOND LYNAM
Editor HAROLD ANDERSON
TV presentation AMERICAN TV SERVICE

Bob Langley and Jenny Hanley introduce a cheerful, irreverent blend of music and conversation live from the foyer of Pebble Mill. With KENNY BALL AND HIS JAZZMEN
Director ROY NORTON
Producer ROY RONNIE. BBC Birmingham