a second serial was made in 1955. this time the alien invaders were already among us. the demons. the series reached new heights at the end of the decade with quatermass and the pit, a stunning production for its time with the added benefit of audio effects from the new radiophonic workshop. it s got an indefinable magic to it, and also nigel kneale s touch of genius. he was the hg wells of his time, i think. we may not have recordings of the whole of that first series, but the quatermass experiment lives on through the sci fi tales it inspired and through a pair of gardening gloves that once terrified the nation. i m joined now by the actor and writer toby hadoke, whose book about the quatermass experiment is being published later this year. he s also part of the cast led by mark gatiss who ll be performing those quatermass scripts at alexandra palace in september.