After three elderly men are bitten by spiders, everyone assumes that their deaths are tragic accidents. But at police headquarters in Paris, Inspector Adamsberg begins to suspect that the case is far more complex than first appears.
| Actor | Role |
|---|---|
 Jean-Hugues AngladeJean-Baptiste / Raphaël Adamsberg | Jean-Baptiste / Raphaël Adamsberg |
 Jacques SpiesserDanglard | Danglard |
 Sylvie Testudle lieutenant Froissy | le lieutenant Froissy |
 Jérôme KircherVeyrenc | Veyrenc |
 Jacques Bonnafféle docteur Malempiat | le docteur Malempiat |
 Corinne MasieroViolette Retancourt | Violette Retancourt |
 Pierre Arditile docteur Cauvert | le docteur Cauvert |
 Elisabeth DepardieuIrène Royer-Ramier | Irène Royer-Ramier |
 Christian Vadimmaître Carvin | maître Carvin |
 Bernard VerleyVessac | Vessac |
 Issaka SawadogoMathias | Mathias |