There are 2 things wrong with that sentence. You want to invest it safely yet double your money in a year. You want a safe investment? Go invest in a low-medium risk mutual fund at a bank. You want to double your money in only a year? You're going to have to invest in something high risk like a certain stock, Bitcoin, an altcoin, a private business etc. We all want to safely double our money. It's just unrealistic. No risk no reward.