From IMDB:

A small army of well trained criminals led by Grace Lewis have hijacked a train deep beneath the English Channel.

From Netflix:

A special forces operative traveling from London to Paris with his girlfriend takes action when armed, ruthless mercenaries seize control of their train

From Netflix you can stream this 2 hour 3 minute complete action film.  According to IMDB another name for this film is “SAS: Red Notice”.

Good sociopath versus bad sociopath.  Our hero is Tom Buckingham (played by Sam Heughan who played Jamie Fraser in Outlander ).  Our villain is Grace Lewis (played by Ruby Rose who played Batwoman in Batwoman ).

There are lots of good and bad guys.  Unfortunately it can be difficult to  figure out just who is good and who is bad.  Turncoat traitors abound.  You just never can tell.  Needless to say the evil doers are all part of a giant conspiracy.

Most of the action takes place in the Eurotrain underchannel tunnel. To be sure, most of the action is very violent and definitely not for children.  As usual our hero can perform superhuman (violent) feats while seriously wounded.

Sociopaths are unable to feel empathy or understand the sufferings of others. Little by little Tom’s girl friend Dr. Sophie Hart (played by Hannah John-Kamen) comes to understand that Tom feels relatively few emotions and can kill humans with effortless ease.  In that aspect Tom is well matched against Grace Lewis whose cruelty is startling even though we may think we are inured to such films.

How shocking to think that if you can stand the violence I will still recommend that you DO NOT MISS!