The Truth deals with an investigation by the Special Investigation Team (SIT) involving the murder of the Chief Minister of Kerala in bomb blast.
| Actor | Role |
|---|---|
 MammoottyDIG Bharath Patteri | DIG Bharath Patteri |
 Divyaa UnniNimmi | Nimmi |
 MuraliDGP Hariprasad IPS | DGP Hariprasad IPS |
 Vani ViswanathSP Meena Nambiar IPS | SP Meena Nambiar IPS |
 K. B. Ganesh KumarPrasad | Prasad |
 SaikumarDySP John | DySP John |
 ThilakanShivapuram Patteri | Shivapuram Patteri |
 JanardhananDySP Kuttikrishna Pothuval | DySP Kuttikrishna Pothuval |
 N F VarghesePoozhimattom Thomachan | Poozhimattom Thomachan |
 Balachandra MenonCM Madhavan | CM Madhavan |
 K. P. A. C. AzeezCKC Nambiar | CKC Nambiar |
 SadiqPeter | Peter |
| JJignesh JoshiKiller Woman/Killer Bose | Killer Woman/Killer Bose |
 Cochin HaneefaKumaran | Kumaran |
 PraveenaGayathri | Gayathri |
 Kollam ThulasiAnwar Ahmed | Anwar Ahmed |
 AugustineCI Augustine Thomas | CI Augustine Thomas |
 SubairJudge | Judge |
 KunchanSankaran | Sankaran |
 KunjandiRamachandran Nair | Ramachandran Nair |
 Babu NamboothiriMahendran | Mahendran |
 VijayakumarJournalist Babu | Journalist Babu |
 Bobby KottarakkaraMohandas | Mohandas |
| RRamya SudhaNot listed | Not listed |
| GGirija PremanNot listed | Not listed |
 AliyarRavindran Nair | Ravindran Nair |