The premiere of 'Suits' season 5 was one of the most anticipated debuts for TV series this year. The exciting scenes between Harvey, Donna and Louis continue in Episode 4. The trailer reveals that Louis' sister visits the law firm, and will shake up Harvey and Louis relationship. But Donna will come and try to settle things.

Episode 4 of 'Suits' season 5 airs July 15. As expected, viewers may see another headbutt of Harvey Specter and Louis Litt. But this time, the heat intensifies.

The trailer of 'Suits' season 5 episode 4 titled 'Toe to Toe' showed that Louis's beautiful sister Esther (Amy Acker) visits the law firm. Louis does not want Esther to stay in town longer than necessary, but she may have other plans in mind.

What's more exciting about the trailer is that, it shows Esther and Harvey seem to develop some liking towards each other. But when Louis notices this, he rushes to threaten Harvey to stay away from his sister.

Vine Report noted that Esther appearance on the show may add fuel to fire to the feud between Harvey and Louis. But Donna may come to the rescue and help settle things between them.

IBTimes also speculates that Esther may become Harvey's new love interest. If that is so, it will only complicate the thing between Donna and Harvey.

Meanwhile, Season 5 will also show how Harvey breaks the law to get the answers he wants. Christian Today speculates that the special client may have something to do with origin of the law firm that is why Harvey will make some unusual ways to win the case.

The official synopsis of the new episode reads: "Harvey steps outside his usual area of expertise, in order to take a case from a client who has a special tie to the firm. Mike and Zane work their class-action case together, but Mike learns they have different ideas about what constitutes a win - for themselves, and for their clients. And Donna counsels Louis on the best way to settle a feud."

Fans, what are your thoughts about Esther and Harvey's possible romance? Sound off your comments below for the latest 'Suits' season 5 spoilers.