I too have a vague recollection of this series. I only remember odds 'n' sods concerning it also. I'm pretty sure it was somthing of a kids supernatural drama,shown on ITV on a Sunday teatime.
I do remember a distinctive African drum beat used in the series, i since discovered that the drumming tune was originally used in the film "King Solomon's Mines" starring the late great Stewart Granger.
Unfortunnately i can't remember the name of the series or any of the actors in it.I do recall that it aired during the mid-late 1970s though, probably aroung the era of other ITV kids supernatural classics such as "Sky" & 'The Children of the Stones.'