Ivan Canabrava is a writer, turned insurance ivestigator who investigates mysterious deaths involving Bufo Marinus. Bufo Marinus is a frog poison causing catalepsy in humans, simulating death, enabling grand insurance fraud and other crimes. Ten years later, now as a successful writer, similar characters possibly using Bufo Marinus reappear and create an intricate plot full of surprises.
| Actor | Role |
|---|---|
 José MayerIvan Canabrava / Gustavo Flávio | Ivan Canabrava / Gustavo Flávio |
 Tony RamosGuedes | Guedes |
 Isabel GuéronMinolta | Minolta |
 Gracindo JúniorEugênio Delamare | Eugênio Delamare |
 Zezé PolessaZilda | Zilda |
 Matheus NachtergaeleAgenor | Agenor |
 Juca de OliveiraProf. Ceresso | Prof. Ceresso |
 Otávio AugustoOsmar | Osmar |
 Milton GonçalvesDelegado Ferreira | Delegado Ferreira |
 Maitê ProençaDelfina Delamare | Delfina Delamare |
 Ernani MoraesGuarda-costas | Guarda-costas |
 Dirce MigliaccioDona Bernarda | Dona Bernarda |
 Jaqueline SperandioClara Estrucho | Clara Estrucho |
 Celso FrateschiDr. Ribeiroles | Dr. Ribeiroles |
 Luciano ChirolliDr. Baran | Dr. Baran |
| GGustavo GasparaniMédico | Médico |
| MMario BorgesNelson | Nelson |
 Marcello EscorelWilfredo | Wilfredo |
| EEndiara MendonçaGarota do Motel | Garota do Motel |
 Jandir FerrariFuncionário Dep. Pessoal | Funcionário Dep. Pessoal |
| LLuis Sergio Lima e SilvaCoveiro | Coveiro |
 Jurandir de OliveiraPorteiro | Porteiro |
 Thalma de FreitasRizoleta | Rizoleta |