Cut's man pages are not that clear so let's start with examples,
Cut out starting from character "-" to end ".",
Sample Data
ls Episode 1-Pilot.avi Episode 10-False Flag.avi Episode 11-Dead Drop and 12-Loose Ends.avi Episode 2-Identity.avi Episode 3-Old Friends.avi Episode 4-Fight Or Flight.avi Episode 5-Family Business.avi Episode 6-Unpaid Debts.avi Episode 7-Broken Rules.avi Episode 8-Wanted Man.avi Episode 9-Hard Bargain.avi