After Dr Saathoff's testimony concluded, the prosecution rested its case against Lindsay Clancy.

Judge William Sullivan then excused the jury for the day.

'You have heard all the evidence,' he told the jury, but advised them to keep an open mind.

Sullivan ordered a lunch break, and when the court returns, the lawyers will go over the charges against Clancy.

On the latest episode of The Trial USA, crime correspondent Rachel Sharp takes listeners inside Plymouth Superior Court for day fifteen of the Lindsay Clancy trial, the second day of the defense's case.

Rachel has been covering every single day of the trial in Plymouth, Massachusetts, keeping our readers up to date with live reports and filing video roundups from the scene.

Court is adjourned for the day. Jurors will hear closing statements from the prosecution and defense in the morning before they begin their deliberations.

Judge William Sullivan said he will give a manslaughter instruction - meaning that the jury could find Clancy guilty of the lesser charges of manslaughter rather than murder.

He will not give the jury instructions on the police investigation.

When asked how long they want for closings, Reddington said around 30 minutes, Sprague around one hour.

The judge said he will give them an hour.

Kevin Reddington asked the judge for the jury to be allowed to consider instructions based on an inadequate police investigation.

'It was no investigation,’ he said.

'They basically accepted the fact that she strangled the children and moved on.'

He said that they didn't test the window screen or the tumbler that she allegedly crushed pills into. He also said there are all sorts of questions about the blood spatter.

'I could go on and on about the horrific investigation,' he said.

Reddington argued the jury could acquit based on the investigation.

‘To have a lack of criminal responsibility, you have to admit involvement in the crime, but when you’re trying the case with lack of criminal responsibility, the government still has the burden to prove to a jury beyond a reasonable doubt that the defendant is guilty of, based on the evidence, that particular crime,' he said.

'If there’s evidence of a police investigation that is deficient, a jury does have a right to consider that as a basis of an acquittal.'

Reddington asked the judge to remove instructions about voluntary intoxication.

'Believe it or not, after five weeks, we agree,' he joked, acknowledging the prosecution had the same requestion.

Reddington said he did not see any evidence to suggestion she voluntary took drugs that induced psychosis.

Reddington asked that the word 'morally' is added into the instructions where the jury is told that the state 'must prove that the defendant knew or understood that her conduct was wrong.'

Buckingham objected to involuntary manslaughter being introduced as possible lesser charges.

Bow-wearing prosecutor Shanan Buckingham is asking the judge not to include instructions over involuntary intoxication.

She said there is no evidence to show that Clancy was intoxicated to a debilitating effect during the killings.

Buckingham said that the state does not object to the criminal responsibility explanation.

Court has returned from the lunch recess.

The attorneys are now arguing over the instructions and which charges to give the jury when they begin deliberating.

With the final witness now off the stand, the judge is holding a charging conference Wednesday to determine which lesser charges and legal instructions will be presented to the jury when deliberations begin.

The issue could prove pivotal for Clancy, whose defense argues that her mental state and the effects of medication used to treat her postpartum psychosis should give jurors a path to a lesser conviction.

Prosecutors, however, argue that she deliberately killed her children as part of a plan that involved sending her husband, Patrick Clancy, out on errands while she strangled the children in the basement before attempting to take her own life.