Fiona Shaw Says Sharon Horgan 'Takes Things Right to the Edge' in 'Psychotic' “Bad Sisters ”Season 2 Finale (Exclusive)

Warning: This story contains spoilers for the season 2 finale of Bad Sisters.

Fiona Shaw has no notes for the season 2 finale of Bad Sisters.

The episode, which premiered on Apple TV+ on Monday, Dec. 23, finally answered the questions on fans' minds about Ian's fate and what the Garvey sisters will do next, and it finally revealed the truth behind how Grace died — and why.

Shaw's character Angelica, the nosy sister to Grace's former neighbor Roger (Michael Smiley), has a particularly eventful — and hilarious — journey in the final two episodes after she comes back from the dead, and Shaw tells PEOPLE she was "thrilled" by her character's storyline.

Related: Bad Sisters' Anne-Marie Duff Breaks Down Ian's Bombshell News and Why It's a 'Sad Twist' for Grace (Exclusive)

"It's hilarious, isn't it? And it's on that knife edge, isn't it, of comic and absolutely psychotic," she says of her character whacking Ian (Owen McDonnell) with a hurley and killing him — or so it seemed. "I think that's where the series works very, very well."

Ian isn't actually dead, though, as the Garvey sisters discover when they hide him in the trunk of their car and attempt to throw his body into the sea, only for him to wake up. "It's very clever," Shaw says.

It also parallels her own character's storyline, as Angelica falls off a boat in episode 4 and is believed to be dead by the Garvey sisters until she miraculously returns in episode 7.

Recalling when she learned of her fate, the Harry Potter alum remembers being so thrown off when she was told Grace (Anne-Marie Duff) would die in episode 2 that she could hardly focus on Angelica's fate.

"I don't think I could hear very much after that, and then they said they killed me. I said, 'What? What? What?' So I was killed, and then it took some sentences before they said I was going to come back to life, but in a way, I was killed," she says, joking that "everybody's killed" on the show this season.

Related: Eve Hewson Reveals the Surprising Way She Discovered Her Fate on Bad Sisters Season 2 (Exclusive)

Crediting the show's creator Sharon Horgan for the twists and turns, Shaw continues, "She takes things right to the edge, I think Sharon. She thinks of the most impossible thing, and then somehow swims her own way out of it through the writing."

Horgan, 54, writes the show with the women in mind — she stars as one of the sisters alongside Sarah Greene, Eve Hewson and Eva Birthistle — which is what gives the plot its spark, in Shaw's eyes.

"The wit of the girls is sort of infused into it, and all the eccentricities that went along — that we all put into it — then became part of the writing, because Sharon is writing it all the time."

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories.

Bad Sisters season 2 can be streamed in full on Apple TV+.

Read the original article on People