'Switched at Birth' season 4 spoilers: Furious Bay confronts her mother in episode 19

The Kennishes will be busy preparing for Toby (Lucas Grabeel) and Lily's (Rachel Shenton) baby shower, but will things work according to plan in Monday night's episode of "Switched at Birth" season 4?

In the episode titled "A Mad Tea Party," the supposedly fun baby shower for the upcoming Kennish baby turns into a disaster when one unfortunate disaster comes one after another.

According to the official synopsis for the episode, "Bay takes over hosting Lily's baby shower at the Kennish house when Regina (Constance Marie) is pulled away by an emergency with Will (Sayeed Shahidi). At the shower, sparks fly between Kathryn (Lea Thompson) and Professor Marillo (guest star Bess Armstrong "My So-Called Life"), with Daphne (Katie Leclerc) caught in the middle. Lily stresses over how others will take the news of her decision."

Based on the promo trailer for the upcoming episode, Bay becomes fuming mad in the middle of the baby shower.

She first snaps at Daphne, who tells her something that has been bothering her for quite a while. While Daphne warns Bay that she will be disappointed with the news, Bay just tells her in an instant that she is already angry about the situation.

Then Bay turns to Regina, and confronts her for lying about something. "Lying has been your M.O. since you found out about the switch," Bay snaps.

Meanwhile, Lily is stressing out over the possible reaction of their loved ones about her decision to quit her job before the baby shower began. In a sneak peek, Lily and Toby are discussing what kind of shoes she should wear during the party, as well as how they will tell Melody (Marlee Matlin) and the rest of the guests about her decision. But in the end, the two decide not to worry about it too much and enjoy the party.

"Switched at Birth" season 4 episode 19 airs Monday night, Oct. 19, on ABC Family.

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