Could Olivia (Valerie Mahaffet) be the Beverly Hills slasher? That’s what episode 10 of “Devious Maids” led us to believe when Michael’s (Brett Cullen) devious ex-wife was caught suspiciously talking on the phone discussing a certain "plan." Moments after hanging up (with who we thought could be an accomplice in the killings), the conniving red head surprisingly took a buzzer to her head, shaving off all her luscious locks. Now if Olivia didn’t look skeptical before she sure does now…

But fans of the show weren’t the only ones who thought Olivia could be responsible for the murders that occurred all throughout Season 3 of the Lifetime drama. Marisol (Ana Ortiz) revealed to Rosie (Dania Ramirez) that she felt as though Olivia had a part to play in the brutal deaths of the tennis pro and their friend after she and Jesse’s (Nathan Owens) newest employer sat down for a little chat.

During their one-on-one, Olivia revealed to Marisol that she and her ex-husband had been seeing each other for months. Olivia then scoffed that Michael’s current wife Taylor (Brianna Brown), who was the original mistress, was getting a taste of her own medicine. “I couldn’t have planned it better myself,” Olivia confessed taking pleasure in watching Taylor’s life crumble.

In episode 11, “Terms of Endearment,” Marisol’s suspicions towards Olivia will grow significantly. And according to the synopsis, that will put an even bigger strain on her rocky relationship with Jesse as the two clash over whether or not the well-paying socialite could be a killer.

Meanwhile, Rosie will make a “big decision” after Spence (Grant Show) starts questioning Ernesto’s (Cristián de la Fuente) strange behavior. We’re curious if that means Spence will help Rosie see the light and realize her first love might not be the man he says he is.

Although it’s unknown whether Rosie will learn the dark truth about her first husband, it was teased that Zoila (Judy Reyes) will uncover a “disturbing” secret about Dr. Neff (John O’Hurley) in episode 11. Is it possible that Joy (Joy Osmanski) could be the one to tell Zoila the shocking tidbit about their boss considering she owes Zoila big time? (During episode 10, Zoila took the blame for spilling the ashes that belonged to Dr. Neff’s mother so that Joy wouldn’t ruin her relationship with her father-like figure.) Here's hoping Joy will return the maidly favor and help Zoila keep the job that Dr. Neff is so determined to see her lose.

Lastly, Evelyn (Rebecca Wisocky) will put Carmen (Roselyn Sanchez) in charge of disciplining her manipulative, foster son – and we have to admit, knowing how sly their boy is, it’ll only be a matter of time before he’s the one disciplining Carmen.

“Devious Maids” airs Mondays at 9 p.m. EDT on Lifetime.