Mad Men Mid-Season Finale: Is Megan Draper Going to Die in Plane Crash?
The mid-season finale of Mad Men is titled 'Waterloo'Mad Men/Facebook

Mad Men mid-Season 7 Finale episode titled 'Waterloo' airs tonight (May 25) and it might just change Don Draper's life forever.

The official synopsis for the episode reads:

"Don is troubled by a letter; Peggy may seek a new future on a risky venture; Roger receives a phone call; Pete and Cutler butt heads."

Click here to view the episode online via live stream.

The mid-season finale will also be available online on the AMC official website after it airs on TV. You can click here to watch.

In the UK, the episode will be available on Sky Atlantic on Thursday, 29 May.

In the upcoming cliffhanger episode, Don goes into a drinking binge after he leaves Sterling Cooper Draper Pryce advertisement agency, the company he gave his heart and soul to since the series debut in 2007, reports BreatheCast.

Rumours also suggest that Don's estranged wife Megan may die in a plane crash.

In a recent interview, Jon Hamm (who plays Don Draper in the long running series) hinted that the series will not have a happy ending when the series finale airs next year.

"I'm not going to say I wish it wouldn't end," said Hamm to the Huffington Post, in reference to how the series will end in the future. "Because everything has to end, but it is what it is. We're going to have an emotional journey once we wrap it up. We'll walk away and lock the door."

Hamm also revealed how difficult it would be when he no longer has to play Draper after the drama series concludes.

"It's been a big, big, big part of my life. I've got a lot of really good friends in the cast and crew. It's going to be tricky [to see it end]," said Hamm.

The '60s-set drama's last 14-episode season is being divided into two segments. The first seven-part run which started on April 13, 2014 is titled 'The Beginning' and the second half titled 'The End of an Era' will release in 2015.

Mad Men Mid-Season 7 Finale will broadcast this Sunday on the AMC network at 10 pm ET on Sunday, May 25.