This podcast series has moved, but you can now find all of my Radio 4 investigative podcasts in the Marianna In Conspiracyland feed.

For all of my investigations, including Why Do You Hate Me?, Disaster Trolls, War on Truth and Death by Conspiracy?, just search for Marianna In Conspiracyland on BBC Sounds.

Have you ever been trapped in a group chat nightmare, either grabbing the popcorn or wondering how to leave without causing a scene? Who’s the admin in your family group, and do they wield that power responsibly? Do you ever wonder if it’s appropriate to use emojis when talking to your boss? The rise of instant messaging has made our social and professional lives faster, more casual — and more chaotic. But amid all the discussion of the effects of public social media, such as Facebook and Twitter, there has been relatively little attention paid to private social networks—the direct message and the group chat — and how they are shaping our relationships and our world. In this series, Helen Lewis looks at the secret world of instant messaging, meeting a woman who married a chatbot, discovering how Russian dissidents are fighting a propaganda war, and hearing the inside story of how Britain ended up governed from a single WhatsApp group. It’s a strange new world where workplace rebellions are conducted through duelling emojis and military secrets are traded on chat forums about a video game . It’s also a world where you can never be quite sure who you’re talking to—and who’s eavesdropping on you.

Marianna investigates online abuse targeting Eni Aluko and tracks down one of her trolls.

In this series, Why Do You Hate Me?, Marianna Spring delves into her inbox to investigate extraordinary cases of online hate like this one. She meets the people at the heart of the conflicts, to see if understanding – even forgiveness is possible.

In this episode, she speaks to former footballer Eni Aluko and investigates the wave of online abuse directed at her. Marianna tracks down one of the people behind the abusive messages to understand why they do it.

If you have been affected by some of the issues raised in this programme, please visit bbc.co.uk/actionline.

Host: Marianna Spring

Last November, a faked audio clip of London's mayor went viral. Marianna Spring talks to Sadiq Khan about the impact it had and tracks down it's suspected creator.

The clip used artificial intelligence to create a replica of Mr Khan's voice saying words scripted by the faker, disparaging Remembrance weekend with an expletive and calling for pro-Palestinian marches to take precedence.

In this series, Why Do You Hate Me?, Marianna Spring delves into her inbox to investigate extraordinary cases of online hate like this one. She meets the people at the heart of the conflicts, and in some cases brings them together, to see if understanding – even forgiveness – is ever possible.

Subscribe to BBC Sounds to hear the episodes first. And watch the episodes on BBC iPlayer too.

If you have been affected by some of the issues raised in this programme, please visit bbc.co.uk/actionline.

Host: Marianna Spring

The online world can be a breeding ground for hate. But why do some people behave the way they do on social media?

In each episode, the BBC's Disinformation and social media correspondent Marianna Spring - one of the most trolled BBC journalists - dives into her inbox and investigates a different extraordinary case of online hate to find out.

She meets the people at the heart of these conflicts, and in some cases brings them together, to see if understanding - even forgiveness - is ever possible.

You can listen to the first two episodes now on BBC Sounds and by listening to this trail you’ll get a sneak preview as to what’s coming up in the rest of the series.

You can watch the episodes on BBC iPlayer too.

If you have been affected by online abuse, please visit bbc.co.uk/actionline

Host: Marianna Spring

Marianna Spring talks to a survivor of the mass shooting in Las Vegas in 2017 about how posts on a social media account made him question an event he’d witnessed with his own eyes

Listen to more episodes of Why Do You Hate Me on BBC Sounds or wherever you get your podcasts. For this series, Marianna Spring (one of the most trolled BBC journalists) dives into her inbox and investigates a different extraordinary case of online hate to find out. She meets the people at the heart of these conflicts, and in some cases brings them together, to see if understanding - even forgiveness - is ever possible. Subscribe to BBC Sounds to hear the episodes first.

And watch the episodes on BBC iPlayer too.

If you have been affected by online abuse, please visit bbc.co.uk/actionline

Host: Marianna Spring

Cellphone footage courtesy of Lindsay Sherk

When Julia Wandelt posted on social media that she believed she was Madeleine McCann, she became a lightning rod for online anger. In the first of a new series exploring extraordinary cases of online hate and the possibility of forgiveness, Marianna Spring, the BBC's Disinformation and social media correspondent, speaks to Julia about her motives and regrets.

Listen to more episodes of Why Do You Hate Me on BBC Sounds or wherever you get your podcasts. For this series, Marianna Spring (one of the most trolled BBC journalists) dives into her inbox and investigates a different extraordinary case of online hate to find out. She meets the people at the heart of these conflicts, and in some cases brings them together, to see if understanding - even forgiveness - is ever possible. Subscribe to BBC Sounds to hear the episodes first.

And watch the episodes on BBC iPlayer too.

If you have been affected by some of the issues raised in this programme, please visit bbc.co.uk/actionline.

Host: Marianna Spring

Archive credits: Peteski Productions distributed through CBS Media Ventures.

The online world can be a breeding ground for hate. But why do some people behave the way they do on social media?

In each episode, the BBC's Disinformation and social media correspondent Marianna Spring - one of the most trolled BBC journalists - dives into her inbox and investigates a different extraordinary case of online hate to find out.

She meets the people at the heart of these conflicts, and in some cases brings them together, to see if understanding - even forgiveness - is ever possible.

Producers: Emma Close and Ben Carter