As the fifth season of the much-hyped reality show Bigg Boss kickstarts on Sunday, the suspense is growing over the new inmates even as Nihita Biswas, wife of convicted murderer Charles Sobhraj, actress-cum-reality TV star Pooja Bedi and actor Shakti Kapoor are said to be sure shot participants.

Nihita is Nepali wife of Sobhraj, who is in prison since his arrest in Kathmandu in 2003. Sobhraj has allegedly committed at least 12 murders.

Pooja, who hogged into limelight with Jo Jeeta Wohi Sikandar, will be one of the contestants of the Bigg Boss 5. She was earlier seen in the reality shows like Nach Baliye, Khatron ke Khiladi and the most recent being Maa Exchange.

Known for often courting controversies, actor Shakti Kapoor is another contestant, while other names include actress Mahek Chahal, who was seen in Salman Khan-starrer Wanted and performed an item song in recently released film Yamla Pagla Deewana.

Mahek hopes to stay in the house for the entire period and emerge as the winner. This will be her second reality show. She was earlier part of a Norwegian reality show where she was the only Asian participant, sources closed to the actress said.

Shonali Nagrani, a model-turned-actress, has made appearances in films like Dil Bole Hadippa and Rab Ne Bana Di Jodi and has hosted a couple of TV shows as well.

Actress Shraddha Sharma who had grabbed eyeballs for her alleged relationship with ex-beau Raja Chaudhary, estranged husband of television actress Shweta Tiwari is also participating in the show.

Shradha was last seen in Emotional Atyachaar and Love Lockup on Bindaas channel, has been maintaining a low-profile for quite sometime.