Dez anos depois do atentado às Torres Gêmeas, Mac e a equipe se recordam de detalhes daquele dia que deixaram marcas profundas.

Quando um adolescente é encontrado morto, a equipe descobre que seus esforços para conquistar uma atraente garota punk podem ter ido longe demais.

Quando o corpo de uma bela jovem é descoberto em uma Ferrari roubada, a investigação chega a uma família de ladrões de carros, mas a equipe da CSI deve encontrar o assassino antes que os demais familiares sofram o mesmo destino.

A noitada de Danny com alguns policiais novatos acaba de forma inesperada quando eles são pegos em um tiroteio.

A CSI está conduzindo uma investigação quando o irmão de um jovem prodígio do basquete, que havia sido preso recentemente e está em liberdade condicional, é envolvido em um assassinato.

The CSIs investigate when a fraternity prank goes awry on Halloween and a pledge master is left for dead in an open grave.

When news of a high school house party goes viral, resulting in overcrowding, a collapsed porch and a teenage girl's death, the CSIs must use social media to uncover the truth about how she died. Meanwhile, Jo's final case at the FBI returns to haunt her.

As the CSIs investigate the assassination of a judge, Jo comes face-to-face with a criminal from her past.

When an important witness turns up dead, Jo is caught up in the dangerous investigation of the suspected rapist who was freed on her watch in D.C.

A charred body turns into a hot mess for the CSIs when it appears a cage fighter has been murdered by his stalker.

A home invasion investigation becomes more complicated when the victim's family turns out to be less perfect than they originally seem.

The CSIs investigate when a role-playing game turns lethal, with one player falling victim to a bona fide killer and the other kidnapped and held for ransom.

When a lab tech is murdered in a case that has eerie similarities to a 1950's cold case, the CSIs get a glimpse into what goes on in the shadows of the lab.

The CSIs find themselves immersed in the world of competitive video gaming when they discover a murder may be related to a high-stakes tournament.

A wave of brutality threatens a small New York City community when a body is found dismembered and strategically left out on four street corners.

The CSIs are called to a Brooklyn housing project to investigate the murder of a successful businessman who still felt the pull of his old neighborhood.

When Mac is shot, he finds himself in limbo between life and death and, as he fights for his life, it's up to his team to bring the shooter to justice.