Complex sentence: Avinash is also coincidently the best friend of Vikram who begins to suspect that Avinash is not all he seems when a witness (Shatrughan Sinha) identifies Avinash.
Split into simpler sentences: Avinash is also coincidently the best friend of Vikram. Vikram begins to suspect that Avinash is not all he seems when a witness (Shatrughan Sinha) identifies Avinash.