The Great Secret by E. Phillips Oppenheim

I sat up in bed, heavy, unrefreshed, and with a splitting headache. The clock on the mantelpiece was striking three o'clock; from below I could hear the clatter of vehicles in the courtyard, and the distant roar of traffic from the streets beyond. Slowly I realized that it was three o'clock in the afternoon; the events of the night before re-formed themselves in my mind. I rang the bell for the valet and sprang out of bed.

"Why didn't you call me this morning? " I asked angrily.