ten o'clock
Is not this our best plan , Mr. Cavendish ? '' `` And at night ? '' `` We must work some scheme to get horses , and depart before those others reach here . There will be plenty of time between dark and ten o'clock . If we leave this man securely bound , his plight will not even be discovered until Lacy arrives . By that time , with any good fortune , we will be beyond pursuit , lost in the desert . Do you think of anything better ? ''