All three episodes of ITV drama Maryland are now available to stream on ITVX, and with the enticing mystery offered up by the first episode, it seems likely that many fans will binge their way through them all to uncover the truth.

The emotional series stars Suranne Jones and Eve Best as sisters Becca and Rosaline, who are investigating their mother's mysterious death on the Isle of Man, while also coming back together after years of growing apart.

But just what secrets was their mother Mary hiding, how did she die, and how did things shape up for Becca and Rosaline at the end of the series?

Read on for everything you need to know about the ending of Maryland on ITV.

*Warning - contains full spoilers for all three episodes of Maryland*

What secrets was Mary hiding?

Soon after they arrived to identify and repatriate Mary's body, it became clear that she hadn't just been there on holiday - she had in fact set up a whole other life there.

It turned out that some years previously she had decided to track down her birth mother, following the death of her adoptive mother. In doing so, she had come to the island and, once her birth mother died, had inherited a house there.

She had subsequently been splitting her time between the house on the island and Manchester. While on the island, she had built up a community, becoming friends with Cathy and starting a romantic relationship with Pete.

She had also later become aware that she was suffering from Alzheimer's disease - Richard had known this, but Becca and Rosaline had been kept in the dark.

Becca and Rosaline had been shocked to discover all of these secrets, with Becca feeling particularly betrayed having thought she was close with Mary.

How did Mary die?

After spending some time on the island, Becca and Rosaline are informed by the police that Mary died of a morphine overdose - one which they believe was a self-administered, purposeful attempt by Mary to take her own life.

It later transpires that Mary took the morphine from Cathy, after she found out she had Alzheimer's disease, wanting to take the end of her life into her own hands.

Cathy had the morphine because she worked as an end of life doula, although she said the morphine was for her own personal use and she mostly offered cannabis for those she worked with.

At the end of the series, the police had started investigating Cathy for her possession of the morphine and involvement in Mary's death.