'Reign' Series Premiere Spoilers: Mary Has Eyes for Fiance's Brother, Ladies-in-Waiting Caught Up in Intrigue

Queen Mary may be royalty, but her life of luxury doesn't mean she's free from danger. Queen Mary of the upcoming CW series "Reign" would do well to sleep with one eye open. 

The series premiere surrounding the 16th century courtly intrigue of Mary Queen of Scots debuts tonight, October 17 at 9 p.m. The series focuses on a young Mary Stuart, played by "Teen Wolf's" Adelaide Kane, who arrives at the French palace to marry her future husband, Prince Francis, played by Tony Regbo (ITV's "The Town"). Upon Mary's arrival, the court may look beautifully perfect, but appearances can be deceiving. "It's like a Venus fly trap for her, the court," Kane told TVLine."It's this beautiful, shining gem, covered in poison. She has to be so careful."

Under the surface, the court is teeming with people plotting to prevent her marriage. At the time, royals were married solely for strategic political and monetary gains rather than love, and many in the court don't want to tie Mary's native Scotland to France. 

TVLine recently spoke to the stars of the new series about Mary's love interests and the trouble brewing in the French court. 

Even before Mary arrives in France, she knows that there are many who are against her. There was a murder attempt on young Mary while she was still in Scotland, so she knows that political power is something that should not be taken lightly.  "She hasn't really experienced this pomp and ceremony, but she has had it drilled into her head that with the crown comes a vast amount of responsibility," Kane said. "I think that is always her main concern, doing the right thing for her country and doing the right thing as a responsible monarch."

Megan Follows is playing Francis' cunning mother, and her husband, King Henry, is played by Alan Van Sprang, who appeared in another courtly series, "The Tudors." Like in "The Tudors," Van Sprang says his character is interested in many of the ladies at court. "I had done 'The Tudors,' so I knew what the English were up to, but this king - there's a lot of interest in the women among court," Van Sprang said. "He has his wife Catherine, his mistress Diane, and he seems to be finding some interest in Mary's friends, as well." 

Mary will also get involved in some illicit dalliances. Mary's engaged to Francis, but that doesn't mean that she's not drawn to his cute bastard half-brother, Sebastian, played by another "Tudors" vet, Torrance Coombs. 

"They've been engaged since they were children, and she's built up this vision of him and her life with him that she isn't willing to let go of yet," Kane said. "Throw into the mix his half-brother, who seems to understand her and her struggles on a very basic, instinctive level, and they just get each other - which is very difficult for her, to find her very attracted to somebody else when she's so single-minded about being with Francis."

But Mary is unaware that Francis may not be too committed to their future marriage either. 

Mary will have a gaggle of ladies-in-waiting to confide in at court, but their proximity to the queen could sometimes prove to be compromising. Mary's girlfriends include Greer (Celina Sinden), Kenna (Caitlin Stasey, Australia's "Neighbours") and Lola (Anna Popplewell, "The Chronicles of Narnia" films). 

In the premiere, Lola will discover the perils that can befall a lady-in-waiting. "What you see happen to Lola in the pilot happens to all the ladies at one point or another," Popplewell said, "which is that conflict between their friendship with Mary and their sense of duty to their queen - which aren't always necessarily compatible."

On the season premiere, Kenna will also have an interesting scene where she has a very intimate moment--with herself. After that, Stasey says she will may get intimate with a man in court, but it may not be a wise move. "What a turbulent relationship to involve yourself in," says the actress. "There's really no way that it can end well."

Although the show has a modern soundtrack, everything else tries to stay true to the time period, including the costumes. Sinden said the costumes, though beautiful, can be a bit painful. "The corsets are tough but sort of essential to be able to relate to a woman from the 16th century and what she might have been going through, even though our corsets are definitely more comfortable than what they would have been wearing," she said. "I've found that sitting is near impossible. Eating - also quite hard."

Watch the premiere of "Reign" tonight, October 17 at 9 p.m. on The CW.