Kasauti Zindagi Kay (2001) - S12 E18 - Subroto's hand in Prem's murder?

Watch Kasauti Zindagi Kay (2001) Season 12 Episode 18. The show was broadcast on March 2, 2004 on the Star plus channel. Subroto’s involvement in Prem’s death? Prerna apologizes to Rishabh after she receives the cassette that confirms that he is innocent of the murder of Prem. Indroneel informs Komolika about the matter the truth, and Subrato is worried about getting accused in the future. Aparna advises Anurag not to be a doubter about Geeta as the murderer of Prem. Did Subroto murder Prem?