eight o'clock
Any other facts , even unconnected ones ? '' The Millers could think of none , but Mrs. Miller suggested that Belsely , their tenant , would know of anything new or unusual . Rick agreed to talk with him . At eight o'clock , armed with flashlights , the boys departed for the old mine . They approached the area with caution , on the alert for any possible visitors . But the picnic ground was completely abandoned . A quick inspection of the mine showed only their own footprints .