It’s the Great Pumpkin, Charlie Brown (8 p.m., ABC) – In this 1966 animated TV special based on the “Peanuts” comic strip by Charles M. Schulz, Linus waits in the pumpkin patch for the elusive symbol of Halloween to appear.
Lethal Weapon (8 p.m., Fox) – Murtaugh draws parallels between a former Navy SEAL wanted for criminal activity and his partner, Riggs, whose connection to the suspect complicates the case.
Blindspot (8 p.m., NBC) – Weller and Nas search for a fugitive whistleblower in Bulgaria
Frequency (9 p.m., The CW) – Raimy relays new evidence about the Thomas Goff case to Frank, prompting him to take matters into his own hands, despite a warning from Satch.
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Presidential Debate (9 p.m.) – It’s almost over.
Younger (10 p.m., TV Land) – Empirical’s new investor tasks Liza with signing YouTube stars.