“Gringo” is the story of a hapless dupe named Harold (David Oyelowo, showing deft comic timing) who gets stuck in the middle of a lot of bad people and bad decisions.

Harold is an immigrant from Nigeria, married to Bonnie (Thandie Newton, criminally underused), and in financial trouble. “Are you saying I’m cash poor?” Harold asks his accountant. “No, I’m saying you’re poor poor, ,” he replies.

The accountant also tells Harold that his company may be merging, and he could lose his job. But Harold reassures himself that his boss Rich (Joel Edgerton) is an old friend, who has even hired Bonnie to decorate his apartment, and will not let him down. Rich reassures him as well, reminding him that he promised Harold’s life would look like a rap video if he stayed at the company. It’s obvious to us that Rich is a crook and a liar, but Harold has no clue.

Rich’s co-president of the company is Elaine (Charlize Theron, having a lot of fun as a ruthless executive whose self-pep talk includes “Who’s Daddy’s Blue Ribbon girl?”). They come along on Harold’s business trip to Mexico, where the company’s marijuana-based pills are manufactured. That merger means the end of lucrative off-the-books sales to a powerful drug dealer. And that leads to mayhem involving a fake kidnapping, a real kidnapping, a toe sent by international mail, a murder for failing to give the right answer to a question about which Beatles album is the best, a mercenary, and many betrayals.

Nash Edgerton (Joel’s brother) directs with high energy and clearly relishes very dark humor of the story, with many twists and turns as the various bad guys collide with each other. Paris Jackson (Michael’s daughter) has an impressive cameo as a girl enticing a hapless guitar salesman into helping her steal some of those marijuana pills. If you like your crime stories to be nicely nasty, this one does the trick.

Parents should know that this film includes extensive and graphic violence, chases, shootouts, torture, disturbing images, many characters injured and killed, drugs and drug dealing, alcohol, very explicit sexual references and situations, and very strong and crude language.

Family discussion: Was Harold’s father wrong? Why was it hard for him to see what was happening? What is the point of the banana/carrot story?

If you like this, try: “Big Trouble” and “Midnight Run” and, also from the Edgerton brothers, “The Square” (not the recent Cannes award-winner, the Australian crime drama)