I found these spoilers on some sites. I have no clue if they are true or not but here they are...
Season 5 Episode 13, Rush to Judgment
Detective Flack may be in trouble when a teenager dies while under his supervision. The CSI team must investigate the death of a wrestling coach whose body parts are buried around the city.
Season 5 Episode 14, She's Not There
Two men end up in New York City looking for their daughters who have been missing for a period of time. One of them is found dead. Flack is back on duty.
Season 5 Episode 15, The Party's Over
Stella's date is interrupted when a body of a deputy mayor falls from the ceiling at a charity fundraiser. Mac will have trouble solving the next case because of police officers deciding to go on strike because of no payment. On this particular case Mac could be short a CSI.
Season 5 Episode 17, Green Piece
Adam saves a life and Danny and Lindsay tie the knot.
Season 5 Episode 18, Point of No Return
Marty Pino makes a reappearance when involved in a difficult situation. Danny gets in trouble with Mac in the field.
Season 5 Episode 19, Communication Breakdown
Flack has some fun. The team has to figure what an Indian chief was killed with.