Lightning suffered the disappointment of an overtime loss at the Link Centre after Swindon Wildcats fought back from a 3-1 first period deficit to win with a powerplay strike from Jan Kostal.
The game was just 90 seconds old when Michael Farn fired the visitors in front - only for Swindon to hit back 63 seconds after that when Kostal set up Ollie Betteridge to beat netminder Jordan Hedley.
However the home side were soon trailing again thanks to good work by Lewis Hook and Jordan Cownie with Hook the supplier for Cownie to defeat Steve Lyle at 5mins 23secs.
A hooking call on Ross Green gave Wildcats the chance on the powerplay and they made the most of it with Aaron Nell making the pass that was converted by Tomasz Malasinski on 12mins 50secs.
Lightning survived a two minutes plus 10 minutes penalty on Ross Bowers from checking from behind and misconduct to hold onto the slender 3-2 lead going into the first break.
Swindon knew the game was still in their grasp as the teams took the ice for the middle session and they equalised when Kenton Smith supplied Adam Harding to beat Hedley at 25mins 29secs.
Worse to come for Lightning on 36mins 52secs as Wildcats edged in front thanks to Smith who put in Nell’s set-up.
Lightning capitalised on a hooking penalty for Ollie Betteridge to tie the game up again at 47mins 2secs when Petr Horava was the provider for Stan Lascek.
With no further goals in regulation the game went into the extra period which lasted just 46 seconds before Kostal grabbed the winner while Farn was sitting out a delaying the game penalty.
At the same time Bowers was handed a game misconduct penalty for a second misconduct call during the encounter.