The investigation of the Charles Manson murders began August 9th, 1969, There were 11 homicide investigators on scene, the evidence of importance were a gun with blood type O on it, a large blood spot near the north entry way type O/MN, blood spot above the pourch type O-M, Blood spot on block wall type O, blood around the area of Polansky and Sebrings both type O, blood spots near southern portion of living room which leads to bedroom. Type B, Blood drops in hallway which leads to master bedroom exit. Type B, Blood smears on shutters of master bedroom door which leads to pool area of residence, also blood drops on floor beneath the shutter. Both type B, Blood spot on walkway which leads from master bedroom exit towards are where Abigail Folger was found. Type B, Bloody footprints and one shoe heel print found on walkway which leads onto front porch and into the entry of Polanski residence. 1. Jay Sebring / Blood type O-MN 2. Sharon Polanski / Blood type O-M 3. Abigail Folger / Blood type B-MN. The four entrances to the house where 1. east side of house 2. west side of the house 3. south end to the house into the master bedroom. 4. north side of the house leads up to kitchen.