On Thursday, NBC soap opera "Days Of Our Lives" (“DOOL”) will deliver a shocking episode, as Eduardo Hernandez (A Martinez) drops a bombshell on John Black (Drake Hogestyn) about a secret mission. The episode will also focus on Ava (Tamara Braun), Kayla (Mary Beth Evans), Andre (Thaoo Penghlis), Chad (Billy Flynn), Theresa (Jen Lilley) and Kate (Lauren Koslow). [Spoiler Alert!]

TV Guide reports that in Thursday’s episode of “DOOL,” Andre will continue with his evil scheme using Chad, who is oblivious of his plans. Kayla will be perplexed when she encounters her archenemy Ava, while Eduardo makes a stunning confession to John. Elsewhere, Theresa thinks of a way to kick out Kate from Basic Black.

The “DOOL” website has posted sneak peek photos of the cast for the December 16 instalment, which include a picture of Ava as she faces a horrified Kayla. There is also a photo of Eduardo as he surprises John with an atrocious confession.

According to Soap Central, John will probe his former schoolmate Eduardo, who will then admit that his latest mission from his mysterious organisation is to kill John.

Prior to the confession, John found out that Eduardo also went to Winterthorne Academy like him. John attempted to probe Eduardo in the hopes of finding answers about his past, but Eduardo said he does not recall much about his time in the academy. In previous episodes of “Days Of Our Lives,” Eduardo was shown being hired by a secret organisation for a task involving John.

Meanwhile, the conflict between Kayla and Ava escalates as they run into each other. Previous “DOOL” episodes have hinted of Ava’s plans to wreak havoc for Kayla and Steve (Stephen Nichols), who were recently reunited.

Followers of the show will remember Ava’s obsession with Steve, whom she called “Patch,” which traces back to as early as 2008. Since then, she has stalked him and ensued violence that harmed other “DOOL” characters.

When asked about her issues with Steve, Ava revealed that Steve left her at the altar. What she did not know was that Steve was abducted by the DiMeras. Previous episodes also showed that because of the incident, Ava was left heartbroken and was later diagnosed with a psychotic disorder.

“Days Of Our Lives” airs daily at 1 pm on NBC and 8 pm on POP.

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