Wow, Vinuthasri. What an excellent memory. I had completely forgotten about the Murthy bloke whom Srini disposed of on behalf of Abhi.
Bril was murdered by Joe aka Samson aka Lawrence.
Yes, the college principal was murdered by Annamica, so that one has been solved. Veerasamy's murder took place 30 years ago, so that's outside ACD's jurisdiction.
Btw, who is Govindan? Wasn't ACD supposed to have been on his trail as well?