Dexter Opening Sequence

The opening sequence to Dexter is a thriller because there is mystery and suspense. There are close ups to build mystery as we never see his face until the end of the sequence. We can tell that the main character is a perfectionist as he takes time in what he is doing and we see him wrapping floss round his finger in a particular way. 

Dexter is a forensics scientist that kills serial killers for the things that they do wrong. He looks at blood spatter patterns in different cases, in the title sequence there is different ways we see blood as his name is written in blood effect, when he is cooking his breakfast there is blood from the meat and then when he is shaving he cuts himself and we see blood drop in the sink.