After a hiatus of almost two seasons, a fan favorite couple, Fergus (César Domboy) and Marsali (Lauren Lyle), are finally returning in Outlander Season 8, the final season of Starz's popular historical romance series based on Diana Gabaldon's books. Fergus, Jamie and Claire's adoptive son, whom they met in France in the second season, and Marsali, Laoghaire's daughter, were two important characters in the show who abruptly left in the sixth season, shortly after the birth of their son, Henri-Christian, who suffered from dwarfism.After Jamie helped Fergus and Marsali move to New Bern for a new beginning, both Domboy and Lyle have been suspiciously absent from the previous two seasons. However, the couple is finally returning in Outlander Season 8, where they will be reunited with Jamie, Claire and the Fraser family at Fraser's Ridge.While Fergus and Marsali's return is highly anticipated, it signals a tragedy featured in Gabaldon's books. If the final season continues to adapt the couple's book arc, they are in for a catastrophic event that will shake the foundations of the Fraser family.More on Fergus and Marsali’s return in Outlander Season 8 in our story.*Disclaimer: This article contains spoilers for Diana Gabaldon's book titled Written in My Own Heart’s Blood. Readers' discretion is advised.*Outlander Season 8: Fergus and Marsali’s return might be tragic View this post on Instagram Instagram PostAfter a hiatus of almost two seasons, Fergus and Marsali are finally returning in Outlander Season 8, the final season of the Starz series, which will give their characters the perfect conclusion. But one particular book sequence hints that Fergus and Marsali's return might be tragic and involve the death of their son Henri-Christian, who was born in the sixth season of the show.Gabaldon's Written in My Own Heart’s Blood features a gut-wrenching sequence for the couple and a tragic death, called the most brutal by readers. After Fergus and Marsali move to Philadelphia to open their print shop, they receive threats from the Loyalists, who are unhappy with Fergus' journalism amidst the American Revolutionary War. However, Jamie's son never backs down and continues to print news of freedom until one day the group burns their shop, with the family still inside.While most of the family managed to escape, their sons Germain and young Henri-Christian were sleeping on the first floor, unaware of the fire. When Germain wakes up, the fire is already at its worst and he tries to escape with his brother. However, during this scuffle, Henri-Christian falls from the roof of the print shop to his death, leaving a guilt-ridden Germain, who is rescued by Fergus. This is one of the most tragic deaths in Gabaldon's books, which might be featured in Outlander Season 8, now that Fergus and Marsali are back in the show's universe.Can Outlander Season 8 feature this tragedy? Possibilities explored View this post on Instagram Instagram PostFans have a good reason to believe that Outlander Season 8 might feature this tragedy for Fergus and Marsali. Firstly, the show already set up the couple's print shop back in the sixth season. After Henri-Christian was bullied by the people of the Ridge for his dwarfism, Fergus blamed himself and was on the verge of su*c*de when Jamie and Claire saved him. The couple helped their son move to New Bern with his family for a new start and Jamie also acquired a new print shop for Fergus, sowing the seeds for this tragedy in the final season.Additionally, since Outlander Season 8 is the final season in the series, it will likely increase the stakes for the characters. Since Henri-Christian is a beloved member of the Fraser family and Jamie and Claire's grandson, tragedy might befall him in the upcoming season.The recently released teaser for Outlander Season 8 even features a snippet of Jamie building a small coffin, which might signal Henri-Christian's death. This would also further Fergus' guilt, which was initially featured in Season 6 but was abruptly ended after the couple exited the show.While fans would not want Outlander Season 8 to feature this tragic arc for the couple in the final season, it is an important sequence in the books. The show can still conclude the couple's story with a happy ending, with Henri-Christian still by his parents' side, but Fergus and Marsali's return signals that the final season might feature this tragic death.Catch the Season 8 premiere of Outlander on Starz on March 6.For the latest scoops on your favorite TV shows and movies, follow SoapCentral.