<P> Greg begins his journey from a lab rat to a field mouse , as the Las Vegas Crime Lab faces a personnel overhaul ( `` Ch - Ch - Changes '' ) , during the fifth season of CSI . The team 's final days together are plagued with more investigations into the insane and the unusual , including the discovery of an `` alien '' corpse just outside the boundary of Area 51 ( `` Viva Las Vegas '' ) , a body washed up in a thunderstorm ( `` Down the Drain '' ) , the kidnapping of a thirteen - year - old girl ( `` Harvest '' ) , a death at a fumigation ( `` Crows Feet '' ) , a swingers party ( `` Swap Meet '' ) , the return of the Blue Paint Killer ( `` What 's Eating Gilbert Grissom ? '' ) , and a kidnapping at a hotel ( `` Formalities '' ) . It 's the appearance of new evidence that appears literally as Grisson is on the witness stand , however , that causes Ecklie to separate Grissom and Willows ' team ( `` Mea Culpa '' ) , with Catherine , Nick , and Warrick delving into cases such as brain death ( `` No Humans Involved '' ) , a body in a car ( `` Who Shot Sherlock ? '' ) , a severed head containing a snake ( `` Snakes '' ) , the death of a bear ( `` Unbearable '' ) , and a murder involving sports betting ( `` Big Middle '' ) . The risk of losing of one of their own , however , allows Ecklie and Grisson to set aside their differences , both personal and professional , and reunite the team once again ( `` Grave Danger '' ) . </P>
<P> Greg begins his journey from a lab rat to a field mouse , as the Las Vegas Crime Lab faces a personnel overhaul ( `` Ch - Ch - Changes '' ) , during the fifth season of CSI . The team 's final days together are plagued with more investigations into the insane and the unusual , including the discovery of an `` alien '' corpse just outside the boundary of Area 51 ( `` Viva Las Vegas '' ) , a body washed up in a thunderstorm ( `` Down the Drain '' ) , the kidnapping of a thirteen - year - old girl ( `` Harvest '' ) , a death at a fumigation ( `` Crows Feet '' ) , a swingers party ( `` Swap Meet '' ) , the return of the Blue Paint Killer ( `` What 's Eating Gilbert Grissom ? '' ) , and a kidnapping at a hotel ( `` Formalities '' ) . It 's the appearance of new evidence that appears literally as Grisson is on the witness stand , however , that causes Ecklie to separate Grissom and Willows ' team ( `` Mea Culpa '' ) , with Catherine , Nick , and Warrick delving into cases such as brain death ( `` No Humans Involved '' ) , a body in a car ( `` Who Shot Sherlock ? '' ) , a severed head containing a snake ( `` Snakes '' ) , the death of a bear ( `` Unbearable '' ) , and a murder involving sports betting ( `` Big Middle '' ) . The risk of losing of one of their own , however , allows Ecklie and Grisson to set aside their differences , both personal and professional , and reunite the team once again ( `` Grave Danger '' ) . </P>
when does the csi team get back together
when does the csi team get back together
`` Grave Danger ''
`` Grave Danger ''