TV viewers will be introduced to Howard Wolowitz's long-lost half-brother once "The Big Bang Theory" returns next month from a short hiatus.

The last episode, "The Leftover Thermalization," paid tribute to late actress Carol Ann Susi, who played the voice role of Howard's nagging mother on the show before she died of cancer last November. The show acknowledged Mrs. Wolowitz's death as the geeky gang gathered in her apartment one last time to share a meal together in her memory. Howard came up with the idea of using the food in her refrigerator to cook a meal after it thawed out due to a power outage.

The upcoming episode of "The Big Bang Theory" will focus on Sheldon and Leonard as they sneak their way into meeting one of their idols.

According to Carter Matt, the synopsis for the episode, which is titled "The Skywalker Incursion," reads as follows:

"When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Dr. Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong."

Entertainment Weekly also revealed that Wolowitz's little brother will be introduced on the April 9 episode, entitled "The Fortification Implementation." "Victorious" star Matt Bennett will guest star as Josh, Howard Wolowitz's younger half-brother from his father's side, who unexpectedly comes to town and shows up on his doorstep. Howard's estranged father has not yet appeared on the series.

In addition, "Bridesmaids" and "iCarly" star Bennett will also appear in the episode.

Season 8, Episode 19 of "The Big Bang Theory," "The Skywalker Incursion," will air on Thursday, April 2 on CBS.

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