Abstract: The present invention relates to an improved cap for swimming pool coping of the type incorporating a bead retainer for a circumscribing bead of a pool cover. The cap comprises a longitudinally extending body having securing means to releasably secure the cap to the coping. A groove longitudinally extends in the front of the cap for releasably securing the pool cover bead and means on the entrance to the groove for releasably retaining therein a plug strip whereby water and debris are blocked from entering the groove. The groove may alternatively releasably receive the bead of the pool cover, or hold therein a plug a strip means or a strip light means, the latter preferably made of fibre optic cable to light the periphery of the pool for safety at night.