Aidan Turner is back as the dashing Captain Ross Poldark alongside Eleanor Tomlinson as Demelza.
The new season has gotten off to an epic start already as Ross gears up to move to London to become an MP in order to improve the lives of those around him.
This season contains eight episodes in total.
How to watch Poldark season 4 online
As a BBC drama, Poldark is shown on BBC One before being added to the BBC iPlayer afterwards.
New season four episodes are also added to Amazon Instant Video in the UK after their initial broadcast.
Episodes can be purchased for £2.49 each or the entire season costs £15.99.
In the US, Poldark is shown on PBS’s Masterpiece network and the season is available to watch on pbs.org.
This option is sadly not available to fans outside the US.
The first two seasons are currently streaming on Netflix in the UK for those looking to catch up on earlier episodes.
What will happen in the next episode of Poldark season 4?
Episode twos due to air this Sunday, June 17 at 9pm.
The synopsis reads: “The Poldarks determine to get their relationship on track and the Enyses announce they’re with child.
“Hugh’s (Josh Whitehouse) worsening health threatens his chance to stand in the election however, and the prospect of him remaining in Cornwall adds pressure to the Poldark’s fragile marriage.
“At the Sawle Feast, Tom Harry (Turlough Convery) challenges Sam (Tom York) to a wrestling match. When Emma (Ciara Charteris) offers herself as the prize, Sam accepts.
“To everyone’s horror Hugh continues to worsen and remains unfit to stand in the election. Falmouth offers the candidacy to Ross but will he accept?”
Will there be another series of Poldark?
Yes – it’s great news for fans.
Poldark has already been renewed for a fifth season.
However, the fifth is likely to be the last series of the Cornwall-based period drama.
Eleanor Tomlinson announced the renewal herself at a screening this week.
In a pre-recorded message, the actress said: “I can confirm that we are going to make series five of Poldark! Yay! So exciting!”
She added: “So, thank you all so much for your support.
“We wouldn’t be here, we wouldn’t have made this show what it’s become without you guys, so thank you for that.”
Poldark season 4 airs on BBC One on Sunday nights at 9pm