Story Cases Walkthrough - L.A. Noire wiki

There are 24 Story Cases

Patrol:

Case #1 - Upon Reflection

Case #2 - Armed and Dangerous

Case #3 - Warrants Outstanding

Case #4 - Buyer Beware

Traffic:

Case #1 - The Driver's Seat

Case #2 - A Marriage Made in Heaven

Case #3 - The Fallen Idol

DLC Case - A Slip Of The Tongue

Homicide:

Case #1 - The Red Lipstick Murder

Case #2 - The Golden Butterfly

Case #3 - The Silk Stocking Murder

Case #4 - The White Shoe Slaying

Case #5 - The Studio Secretary Murder

Case #6 - The Quarter Moon Murders

Vice:

Case #1 - The Black Caesar

Case #2 - The Set Up

Case #3 - Manifest Destiny

DLC Case - The Naked City

Arson:

Case #1 - The Gas Man

Case #2 - A Walk in Elysian Fields

Case #3 - House of Sticks

Case #4 - A Polite Invitation

DLC Case - Nicholson Electroplating

Case #5 - A Different Kind of War