[1][2] "All Fall Down " originally aired on ABC on 2 October 1967.
It was a comedy and starred the Kessey twins, Katherine and Karen, in roles specifically written for them.
[3][4] Star Barry Creyton later recalled he "didn’t enjoy that... due to ego more than the script, though (laughs).
My co-stars where these singing twins, two girls who were popular at the time (Katherine and Karen Kessey).
At that time in the ‘60s, I was well enough known to have top billing and they didn’t give it to me, they gave it to the twins, and I was pretty pissed."