Related Clues:

• One end of a maze
• Hatch, as a plot
• Punch line's lead-in
• "___ the Revolution Without Me" (1970)
• Zero hour
• Get rolling
• Involuntary jerk
• Step one
• Prep
• Proctor's instruction
• Jump into
• Frame, in a way
• Provide with a blind date, say
• Police sting, say
• Arrange, as equipment for a band