It is difficult to give one rating because there are really two separate and different stories, with seasons 1 and 2 comprising one and season three the other. To seasons 1-2 I would give 9 stars. The twists and turns and unexpected ending were fantastic. It loses one star because of some minor, yet glaring, errors. I know I'm a nit picker but the writers should know that gold is really heavy, They carry around a case of it like it were filled with cotton balls. They should also know that a wooden box is not going to hide the smell of a decomposing body. And, although he did have an assault charge hanging over him, I can't figure out why the doctor, who was terrified of going to prison, or worse, would murder Carlos in front of a gazillion witnesses. Also the ghost at the end kind of negated the common sense of Eva and Nicholas, though maybe that was kind of cool.
Second story, season three, was great until the last episode. It was so bad that it ruined all the good stuff that came before it (went from 9 stars to one). Leaving aside the fact that they never thought to replace the doctor, and the chase scenes where the person being pursued escapes by walking briskly (and I was disappointed no one thought to use the secret passages we learned about in the first seasons), in what universe does one respond to a ship full of sick people with a battleship sent to sink it? Have they never heard of quarantine? Nicholas had radioed that he had a medical emergency. He didn't say he was carrying a virus of mass destruction. Do you sink a ship full of people with the flu? He never even said it was viral. If it were bacterial they could have sent over some antibiotics. Did anyone realize that the lifeboats could also be sunk.? And they had plenty of time to radio, before the radio room was conveniently destroyed, to send a message that they had a mini Mengele working on a cure and all he needed was a few more minutes. But this story could not possibly have any credibility with a covid aware audience when the doctor using the blood of one immune person and a couple of beakers and test tubes made dozens of serum doses to eliminate the virus. Fabio must have felt silly going through all that trouble trying to find a virus so dangerous that one doctor could end the threat with the ingenuity and supplies last seen by the Professor on Gilligan's island.
Second story, season three, was great until the last episode. It was so bad that it ruined all the good stuff that came before it (went from 9 stars to one). Leaving aside the fact that they never thought to replace the doctor, and the chase scenes where the person being pursued escapes by walking briskly (and I was disappointed no one thought to use the secret passages we learned about in the first seasons), in what universe does one respond to a ship full of sick people with a battleship sent to sink it? Have they never heard of quarantine? Nicholas had radioed that he had a medical emergency. He didn't say he was carrying a virus of mass destruction. Do you sink a ship full of people with the flu? He never even said it was viral. If it were bacterial they could have sent over some antibiotics. Did anyone realize that the lifeboats could also be sunk.? And they had plenty of time to radio, before the radio room was conveniently destroyed, to send a message that they had a mini Mengele working on a cure and all he needed was a few more minutes. But this story could not possibly have any credibility with a covid aware audience when the doctor using the blood of one immune person and a couple of beakers and test tubes made dozens of serum doses to eliminate the virus. Fabio must have felt silly going through all that trouble trying to find a virus so dangerous that one doctor could end the threat with the ingenuity and supplies last seen by the Professor on Gilligan's island.