Judge Shannon Holmes will decide if there is enough evidence for them to face trial when both sides finish calling witnesses.
On Monday, an FBI agent and Detroit police lieutenant took the stand describing the day young Charlie Bothuell V was found in his parents' basement. The now-13-year-old Charlie, who is at the center of this all, did not return to the stand. The prosecution said they were done questioning him.
During other testimony, FBI agent Henrik Impola testified a grow operation was discovered.
"What is a grow operation?" asked an attorney.
"It is a marijuana operation meant to cultivate plants," Impola said.
The defense said it was an old grow operation for medicinal purposes, but would not elaborate out of privacy concerns.
Impola was part of a special team that searched the Bothuell family home detailed a sketch he made of the family basement.
It's the same basement where Charlie V was found hiding out some 11 days after he was first reported missing in June of last year. Impola said that he did not see blankets on the ground of the house.
The agent told the court that he never saw the teen, who previous testimony showed had allegedly been beaten with a PVC pipe and forced to undergo rigorous workouts two times a day which led to this all.
The day began with Lt. Kenneth Gardner, who testified about a lengthy and voluntary interview with the couple at the station that was apparently videotaped without their knowledge.
"I investigated the location based on the information of their child being missing," said Lt. Kenneth Gardner.
He also testified how Charlie's father and stepmother consented to have their text messages extracted with a special device, although what those messages said have yet to be revealed.
Testimony will resume on Tuesday afternoon with another FBI agent .