Nice episode. The professor is so confident that he himself gave a hint to Dev...because of which Dev managed to find Bhawna's dead body...even his name starts with P, so they have one and only suspect. Now they have to collect proofs against him and that too asap because he is about to kill another student. But finding proofs against him will be tough because he's quite experienced in all this.
Muneem's diary doesn't contain clear-cut information (thank god...it's complicated). Mehek tried to find out something...but she failed. The same bank manager called her and she agreed to meet him. She was about to go when Dev reached her house to meet her (maybe Dev being aware of this will be of some help for him in future). He directly convinced Mehek for the hypnotherapy...now for sure she will pretend to be hypnotised.
Dhwani is keeping an eye on Mehek...so she saw DeHek hugging each other...and she realized that Dev still loves Mehek...which is actually true. But at the same time Dhwani knows that Mehek is hiding something from Dev and she's up to something.
Dhwani was following Mehek and she saw Mehek sitting in the bank manager's car...but neither she could click their picture nor she was able to follow them...as her car broke down. I believe this certainly happened for a reason. Either Mehek will kill that bank manager...or she will get kidnapped because maybe that bank manager is in touch with Muneem and he told him what Mehek has done.