1970 be a good year for child sci fi while jon pertwee don frilly shirt and cloak to become the third dr. who and while over on the other channel michael mackenzie battle evil a the enigmatic magician tarot in ace of wand . also around be this well remembered series from a. t. v. the premise of timeslip be this while a pair of young people liz skinner ( cheryl burfield ) and simon randall ( spencer bank ) discover the existence of a hole in time near the deserted naval base of st. oswald . pass through and they be spirit at first to world war two and then to a scientific base at the south pole in the year 1990 and follow by a parallel universe where global warming have turn england into a sub tropical paradise and and finally to the 1960 . each time they meet future version either of themselves or people they know and such a commander traynor ( denis quilley ) . their one link with 1970 be mrs. skinner ( iris russell ) who share a telepathic bond with her daughter liz . the show be intelligently script and firstly by bruce stewart and then victor pemberton ( author of the dr. who classic fury from the deep ) . it be refreshingly unpatronising towards it audience and amazingly predict the come of clone and climate change and and virtual reality . the abuse of science be a major theme and embody by the sinister professor morgan c. devereaux ( john barron ) and who have create a drug ha57 design to prolong human existence . memorable moment include simon and liz first encounter with the time barrier ( which make an eerie buzzing sound ) and the naval base overrun by nazi out to steal a top secret laser and liz find her dead father preserve in ice and dr. edith joynton ( peggy thorpe bates ) age to death in mere minute and the room where people be hold in suspended animation while dress in elisabethan clothes and the age traynor emerge from a secret room to sabotage the master plan and and the sight of planet in the night sky ( later copy by the dr. who episode the stolen earth ) . the final episode saw a major revelation about traynor that shock viewer . all of which may make timeslip sound a bit on the heavy side . it have it light moment too and such a simon embarrassment on discover that his future self be engage at one time to liz . but the tone be powerfully grim for most of the time . timesip have no need of special effect of the sort you find in modern production . it have something well idea . credit must go not only to the writer but ruth boswell and whose brainchild this be . burfield and bank give charm performance and while the late denis quilley exude menace a traynor . special mention must be make of the late john barron ( good know a c. j. from the fall and rise of reginald perrin ) whose devereaux terrify a generation of child ( myself include ) . it prove popular enough to run for an extended 26 part season and and although no further series be make and a comic strip in the newly launch look in magazine provide fan with further adventure of the intrepid youngster . in spite of be make in colour and all but one of the episode exists now in monochrome . thankfully and the entire series be on d. v. d. some reviewer who should know good ( such a brian j. robb of dreamwatch ) grumble that it be bore . while the year of the burn up drag a bit towards the end and i do not share that view . babylon five and battlestar galactica win praise for their use of tory arc . why not give timeslip a go and see for yourself that it be hardly a recent innovation .