<human>: Can you provide a brief overview of the text?

My job is to plan and delegate tasks to an off site group of 5 people.

I found out the following disturbing news about the lead of my team and I don't know how to proceed....

1. He works off the clock (daily and has been for months)

2. He asked one of the female team members out, when she turned him down, he went to his lead and lied and said she called him a rapist and was then made the lead of said team.

3. Since the interaction I mentioned in #2 he has been passive aggressive towards her in ways that negatively impacts her work (not answering questions, lying to management about her performance, etc.)

My job isn't to get involved, but I feel like if I'm not part of the solution, I'm part of the problem and I absolutely cannot abide that. How should I proceed? Do I reach out to their on site manager? Do I reach out to the individual in question directly? Should I talk to my lead (who is also involved with them) and see what he thinks I should do?

All advice is welcome. TIA.
<bot>: The lead of my off site team is working off the clock and essentially sabotaging another team member who refuses to date him. What can I do?