'The Young and the Restless' May 2015 Spoilers: Nikki Struggles to Stay Sober & Jack Returns

This week on the Young and the Restless, Nikki fights hard to stay sober, Jack returns from hiding and other secrets are reveled from Sage, Neil and Kelly.

The very first episode of the week will start off with Sharon confronting Dylan about their relationship and where it is headed. Later in the episode, Fen will be seen lashing out at Michael and Lauren, even as the both of them seem to be ending their marriage as Michael gives divorce papers to Lauren.

In the next episode, Nikki's struggle to stay sober will be shown, as she tries her best to stay from addiction. Meanwhile, Victoria and Adam get into a heated argument. And Paul reveals his findings on the Fen's blackmailing to Summer, Kyle and Kevin.

In the next episodes, Victor will be seen asking some personal and not-so-personal questions to Neil. Meanwhile, Mariah is worried about Kevin and his intentions to catch the killer. And Phyllis begins to look into the changes in her husband, even as she Joe of playing Avery. Jack finds himself in a rather deplorable situation.

On the other hand, with Chelsea and Billy putting an end to their relationship, Adam will be seen getting closer to Chelsea, and a very hurt Neil has revenge plans of his own for Hillary and Devon.

Towards the end of the week, a surprise awaits the viewers as an unexpected guest crashes a party for the Newman-Abbott merger. Beyond all that, Lily will finally be seen confronting Hillary and Devon.