Regarding the question of whether Alex needed help to carry out the murders, or whether there was a second person at the murders (during and one hour after the murders) I don't think so. The housekeeper claims that an extra person was needed to move vehicles at the time of the murders, and that the word "here" during the 911 call indicates a second person.
Alex didn't need an extra person to move vehicles. It makes sense that Maggie went to the kennels in her vehicle, Alex and Paul used golf carts. Maggie may have believed that they would use her vehicle to visit Alex's father (even though visiting hours were over). The golf cart next to Maggie's body was meant to imply that Paul used that to get to the kennels.
One golf cart was left at the scene. Maggie's vehicle was quite likely also at the scene, and it was later moved to the house by someone else - therefore not parked in the usual Maggie parking spot - which is easily explained.
Dead at 8:49.
Alex went to the house, he bagged up shoes/ pants/ shirt/ clothing, put clothing and guns in vehicle, walked around, maybe washed hands and face/ maybe a quick shower, got dressed.
Left house at 9:07, he had 18 minutes to clean up
Left guns and clothing (?) at mother's property
10 PM arrived at home
10:06 p.m. - phoned 911, he had 6 minutes to clean up lose ends
10:17 p.m. - 911 call ends
10:25 p.m. - police arrive, he had 8 minutes to clean up some more
Total time alone at home after murders: 18+6+8 = 32 minutes. Keeping in mind that Alex said this was planned over 6 months (Maggie's sister), and that Alex may have done trial runs in the past, I don't see any need for a second person.
There isn't anything unusual about the vehicles except that Maggie's vehicle was parked in a different-than-usual spot.
8:49 p.m. – Paul’s phone locks for the last time.
8:49 p.m. – Maggie’s phone locks for the last time.
- 8:53 p.m. – Maggie’s phone records 59 steps and orientation changes.
- 9:02 p.m. to 9:07 p.m. – Alex’s phone records 283 steps.
- 9:05 p.m. – Alex calls Randolph Murdaugh.
- 9:06 p.m. – Alex’s suburban starts and his phone connects to his car.
9:07 p.m. - Alex left Moselle to visit his mother
9:22 p.m. – GPS data puts him at Alameda.
9:42 p.m. – Alex’s car starts, his phone connects.
9:43 p.m. – Alex’s car leaves Alameda.
9:56 p.m. to 10:06 p.m. – Alex travels 231 steps.
10:00 p.m. – Alex’s car arrives home and goes to the house.
10:05 p.m. – Alex’s car leaves main house.
10:05:57 p.m. Alex’s car arrives at kennels.
10:06:14 p.m. – Alex calls 911.
10:17 p.m. – 911 call ends.
10:25 p.m. – Law enforcement arrived
timeline
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